3998990080

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{3251}}^1$

素因数の和:3334

約数の個数: 108

約数和(自身を含む): 9900837576

約数和(自身を除く): 5901847496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 961, 992, 1240, 1280, 1922, 1984, 2480, 3251, 3844, 3968, 4805, 4960, 6502, 7688, 7936, 9610, 9920, 13004, 15376, 16255, 19220, 19840, 26008, 30752, 32510, 38440, 39680, 52016, 61504, 65020, 76880, 100781, 104032, 123008, 130040, 153760, 201562, 208064, 246016, 260080, 307520, 403124, 416128, 503905, 520160, 615040, 806248, 832256, 1007810, 1040320, 1230080, 1612496, 2015620, 2080640, 3124211, 3224992, 4031240, 4161280, 6248422, 6449984, 8062480, 12496844, 12899968, 15621055, 16124960, 24993688, 25799936, 31242110, 32249920, 49987376, 62484220, 64499840, 99974752, 124968440, 128999680, 199949504, 249936880, 399899008, 499873760, 799798016, 999747520, 1999495040, 3998990080]

約数ペア:

[(1, 3998990080), (2, 1999495040), (4, 999747520), (5, 799798016), (8, 499873760), (10, 399899008), (16, 249936880), (20, 199949504), (31, 128999680), (32, 124968440), (40, 99974752), (62, 64499840), (64, 62484220), (80, 49987376), (124, 32249920), (128, 31242110), (155, 25799936), (160, 24993688), (248, 16124960), (256, 15621055), (310, 12899968), (320, 12496844), (496, 8062480), (620, 6449984), (640, 6248422), (961, 4161280), (992, 4031240), (1240, 3224992), (1280, 3124211), (1922, 2080640), (1984, 2015620), (2480, 1612496), (3251, 1230080), (3844, 1040320), (3968, 1007810), (4805, 832256), (4960, 806248), (6502, 615040), (7688, 520160), (7936, 503905), (9610, 416128), (9920, 403124), (13004, 307520), (15376, 260080), (16255, 246016), (19220, 208064), (19840, 201562), (26008, 153760), (30752, 130040), (32510, 123008), (38440, 104032), (39680, 100781), (52016, 76880), (61504, 65020)]