388705280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 132

約数和(自身を含む): 975682080

約数和(自身を除く): 586976800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 79, 80, 124, 128, 155, 158, 160, 248, 256, 310, 316, 320, 395, 496, 512, 620, 632, 640, 790, 961, 992, 1024, 1240, 1264, 1280, 1580, 1922, 1984, 2449, 2480, 2528, 2560, 3160, 3844, 3968, 4805, 4898, 4960, 5056, 5120, 6320, 7688, 7936, 9610, 9796, 9920, 10112, 12245, 12640, 15376, 15872, 19220, 19592, 19840, 20224, 24490, 25280, 30752, 31744, 38440, 39184, 39680, 40448, 48980, 50560, 61504, 75919, 76880, 78368, 79360, 80896, 97960, 101120, 123008, 151838, 153760, 156736, 158720, 195920, 202240, 246016, 303676, 307520, 313472, 379595, 391840, 404480, 492032, 607352, 615040, 626944, 759190, 783680, 984064, 1214704, 1230080, 1253888, 1518380, 1567360, 2429408, 2460160, 2507776, 3036760, 3134720, 4858816, 4920320, 6073520, 6269440, 9717632, 12147040, 12538880, 19435264, 24294080, 38870528, 48588160, 77741056, 97176320, 194352640, 388705280]

約数ペア:

[(1, 388705280), (2, 194352640), (4, 97176320), (5, 77741056), (8, 48588160), (10, 38870528), (16, 24294080), (20, 19435264), (31, 12538880), (32, 12147040), (40, 9717632), (62, 6269440), (64, 6073520), (79, 4920320), (80, 4858816), (124, 3134720), (128, 3036760), (155, 2507776), (158, 2460160), (160, 2429408), (248, 1567360), (256, 1518380), (310, 1253888), (316, 1230080), (320, 1214704), (395, 984064), (496, 783680), (512, 759190), (620, 626944), (632, 615040), (640, 607352), (790, 492032), (961, 404480), (992, 391840), (1024, 379595), (1240, 313472), (1264, 307520), (1280, 303676), (1580, 246016), (1922, 202240), (1984, 195920), (2449, 158720), (2480, 156736), (2528, 153760), (2560, 151838), (3160, 123008), (3844, 101120), (3968, 97960), (4805, 80896), (4898, 79360), (4960, 78368), (5056, 76880), (5120, 75919), (6320, 61504), (7688, 50560), (7936, 48980), (9610, 40448), (9796, 39680), (9920, 39184), (10112, 38440), (12245, 31744), (12640, 30752), (15376, 25280), (15872, 24490), (19220, 20224), (19592, 19840)]