20868781680

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7723}}^1$

素因数の和:7890

約数の個数: 240

約数和(自身を含む): 73212397440

約数和(自身を除く): 52343615760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 139, 144, 162, 180, 216, 240, 243, 270, 278, 324, 360, 405, 417, 432, 486, 540, 556, 648, 695, 720, 810, 834, 972, 1080, 1112, 1215, 1251, 1296, 1390, 1620, 1668, 1944, 2085, 2160, 2224, 2430, 2502, 2780, 3240, 3336, 3753, 3888, 4170, 4860, 5004, 5560, 6255, 6480, 6672, 7506, 7723, 8340, 9720, 10008, 11120, 11259, 12510, 15012, 15446, 16680, 18765, 19440, 20016, 22518, 23169, 25020, 30024, 30892, 33360, 33777, 37530, 38615, 45036, 46338, 50040, 56295, 60048, 61784, 67554, 69507, 75060, 77230, 90072, 92676, 100080, 112590, 115845, 123568, 135108, 139014, 150120, 154460, 168885, 180144, 185352, 208521, 225180, 231690, 270216, 278028, 300240, 308920, 337770, 347535, 370704, 417042, 450360, 463380, 540432, 556056, 617840, 625563, 675540, 695070, 834084, 900720, 926760, 1042605, 1073497, 1112112, 1251126, 1351080, 1390140, 1668168, 1853520, 1876689, 2085210, 2146994, 2502252, 2702160, 2780280, 3127815, 3220491, 3336336, 3753378, 4170420, 4293988, 5004504, 5367485, 5560560, 6255630, 6440982, 7506756, 8340840, 8587976, 9383445, 9661473, 10009008, 10734970, 12511260, 12881964, 15013512, 16102455, 16681680, 17175952, 18766890, 19322946, 21469940, 25022520, 25763928, 28984419, 30027024, 32204910, 37533780, 38645892, 42939880, 48307365, 50045040, 51527856, 57968838, 64409820, 75067560, 77291784, 85879760, 86953257, 96614730, 115937676, 128819640, 144922095, 150135120, 154583568, 173906514, 193229460, 231875352, 257639280, 260859771, 289844190, 347813028, 386458920, 434766285, 463750704, 521719542, 579688380, 695626056, 772917840, 869532570, 1043439084, 1159376760, 1304298855, 1391252112, 1739065140, 2086878168, 2318753520, 2608597710, 3478130280, 4173756336, 5217195420, 6956260560, 10434390840, 20868781680]

約数ペア:

[(1, 20868781680), (2, 10434390840), (3, 6956260560), (4, 5217195420), (5, 4173756336), (6, 3478130280), (8, 2608597710), (9, 2318753520), (10, 2086878168), (12, 1739065140), (15, 1391252112), (16, 1304298855), (18, 1159376760), (20, 1043439084), (24, 869532570), (27, 772917840), (30, 695626056), (36, 579688380), (40, 521719542), (45, 463750704), (48, 434766285), (54, 386458920), (60, 347813028), (72, 289844190), (80, 260859771), (81, 257639280), (90, 231875352), (108, 193229460), (120, 173906514), (135, 154583568), (139, 150135120), (144, 144922095), (162, 128819640), (180, 115937676), (216, 96614730), (240, 86953257), (243, 85879760), (270, 77291784), (278, 75067560), (324, 64409820), (360, 57968838), (405, 51527856), (417, 50045040), (432, 48307365), (486, 42939880), (540, 38645892), (556, 37533780), (648, 32204910), (695, 30027024), (720, 28984419), (810, 25763928), (834, 25022520), (972, 21469940), (1080, 19322946), (1112, 18766890), (1215, 17175952), (1251, 16681680), (1296, 16102455), (1390, 15013512), (1620, 12881964), (1668, 12511260), (1944, 10734970), (2085, 10009008), (2160, 9661473), (2224, 9383445), (2430, 8587976), (2502, 8340840), (2780, 7506756), (3240, 6440982), (3336, 6255630), (3753, 5560560), (3888, 5367485), (4170, 5004504), (4860, 4293988), (5004, 4170420), (5560, 3753378), (6255, 3336336), (6480, 3220491), (6672, 3127815), (7506, 2780280), (7723, 2702160), (8340, 2502252), (9720, 2146994), (10008, 2085210), (11120, 1876689), (11259, 1853520), (12510, 1668168), (15012, 1390140), (15446, 1351080), (16680, 1251126), (18765, 1112112), (19440, 1073497), (20016, 1042605), (22518, 926760), (23169, 900720), (25020, 834084), (30024, 695070), (30892, 675540), (33360, 625563), (33777, 617840), (37530, 556056), (38615, 540432), (45036, 463380), (46338, 450360), (50040, 417042), (56295, 370704), (60048, 347535), (61784, 337770), (67554, 308920), (69507, 300240), (75060, 278028), (77230, 270216), (90072, 231690), (92676, 225180), (100080, 208521), (112590, 185352), (115845, 180144), (123568, 168885), (135108, 154460), (139014, 150120)]