20003560960

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:305

約数の個数: 240

約数和(自身を含む): 50905723968

約数和(自身を除く): 30902163008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 47, 62, 64, 80, 94, 124, 128, 155, 160, 173, 188, 235, 248, 256, 310, 320, 346, 376, 470, 496, 512, 620, 640, 692, 752, 865, 940, 961, 992, 1240, 1280, 1384, 1457, 1504, 1730, 1880, 1922, 1984, 2480, 2560, 2768, 2914, 3008, 3460, 3760, 3844, 3968, 4805, 4960, 5363, 5536, 5828, 6016, 6920, 7285, 7520, 7688, 7936, 8131, 9610, 9920, 10726, 11072, 11656, 12032, 13840, 14570, 15040, 15376, 15872, 16262, 19220, 19840, 21452, 22144, 23312, 24064, 26815, 27680, 29140, 30080, 30752, 32524, 38440, 39680, 40655, 42904, 44288, 45167, 46624, 53630, 55360, 58280, 60160, 61504, 65048, 76880, 79360, 81310, 85808, 88576, 90334, 93248, 107260, 110720, 116560, 120320, 123008, 130096, 153760, 162620, 166253, 171616, 180668, 186496, 214520, 221440, 225835, 233120, 246016, 252061, 260192, 307520, 325240, 332506, 343232, 361336, 372992, 429040, 442880, 451670, 466240, 492032, 504122, 520384, 615040, 650480, 665012, 686464, 722672, 745984, 831265, 858080, 903340, 932480, 1008244, 1040768, 1230080, 1260305, 1300960, 1330024, 1372928, 1445344, 1662530, 1716160, 1806680, 1864960, 2016488, 2081536, 2460160, 2520610, 2601920, 2660048, 2745856, 2890688, 3325060, 3432320, 3613360, 3729920, 4032976, 4163072, 5041220, 5203840, 5320096, 5781376, 6650120, 6864640, 7226720, 7813891, 8065952, 10082440, 10407680, 10640192, 11562752, 13300240, 13729280, 14453440, 15627782, 16131904, 20164880, 20815360, 21280384, 23125504, 26600480, 28906880, 31255564, 32263808, 39069455, 40329760, 42560768, 53200960, 57813760, 62511128, 64527616, 78138910, 80659520, 85121536, 106401920, 115627520, 125022256, 129055232, 156277820, 161319040, 212803840, 250044512, 312555640, 322638080, 425607680, 500089024, 625111280, 645276160, 1000178048, 1250222560, 2000356096, 2500445120, 4000712192, 5000890240, 10001780480, 20003560960]

約数ペア:

[(1, 20003560960), (2, 10001780480), (4, 5000890240), (5, 4000712192), (8, 2500445120), (10, 2000356096), (16, 1250222560), (20, 1000178048), (31, 645276160), (32, 625111280), (40, 500089024), (47, 425607680), (62, 322638080), (64, 312555640), (80, 250044512), (94, 212803840), (124, 161319040), (128, 156277820), (155, 129055232), (160, 125022256), (173, 115627520), (188, 106401920), (235, 85121536), (248, 80659520), (256, 78138910), (310, 64527616), (320, 62511128), (346, 57813760), (376, 53200960), (470, 42560768), (496, 40329760), (512, 39069455), (620, 32263808), (640, 31255564), (692, 28906880), (752, 26600480), (865, 23125504), (940, 21280384), (961, 20815360), (992, 20164880), (1240, 16131904), (1280, 15627782), (1384, 14453440), (1457, 13729280), (1504, 13300240), (1730, 11562752), (1880, 10640192), (1922, 10407680), (1984, 10082440), (2480, 8065952), (2560, 7813891), (2768, 7226720), (2914, 6864640), (3008, 6650120), (3460, 5781376), (3760, 5320096), (3844, 5203840), (3968, 5041220), (4805, 4163072), (4960, 4032976), (5363, 3729920), (5536, 3613360), (5828, 3432320), (6016, 3325060), (6920, 2890688), (7285, 2745856), (7520, 2660048), (7688, 2601920), (7936, 2520610), (8131, 2460160), (9610, 2081536), (9920, 2016488), (10726, 1864960), (11072, 1806680), (11656, 1716160), (12032, 1662530), (13840, 1445344), (14570, 1372928), (15040, 1330024), (15376, 1300960), (15872, 1260305), (16262, 1230080), (19220, 1040768), (19840, 1008244), (21452, 932480), (22144, 903340), (23312, 858080), (24064, 831265), (26815, 745984), (27680, 722672), (29140, 686464), (30080, 665012), (30752, 650480), (32524, 615040), (38440, 520384), (39680, 504122), (40655, 492032), (42904, 466240), (44288, 451670), (45167, 442880), (46624, 429040), (53630, 372992), (55360, 361336), (58280, 343232), (60160, 332506), (61504, 325240), (65048, 307520), (76880, 260192), (79360, 252061), (81310, 246016), (85808, 233120), (88576, 225835), (90334, 221440), (93248, 214520), (107260, 186496), (110720, 180668), (116560, 171616), (120320, 166253), (123008, 162620), (130096, 153760)]