20528035120

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{2687}}^1$

素因数の和:2855

約数の個数: 160

約数和(自身を含む): 51296716800

約数和(自身を除く): 30768681680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 37, 40, 58, 74, 80, 89, 116, 145, 148, 178, 185, 232, 290, 296, 356, 370, 445, 464, 580, 592, 712, 740, 890, 1073, 1160, 1424, 1480, 1780, 2146, 2320, 2581, 2687, 2960, 3293, 3560, 4292, 5162, 5365, 5374, 6586, 7120, 8584, 10324, 10730, 10748, 12905, 13172, 13435, 16465, 17168, 20648, 21460, 21496, 25810, 26344, 26870, 32930, 41296, 42920, 42992, 51620, 52688, 53740, 65860, 77923, 85840, 95497, 99419, 103240, 107480, 131720, 155846, 190994, 198838, 206480, 214960, 239143, 263440, 311692, 381988, 389615, 397676, 477485, 478286, 497095, 623384, 763976, 779230, 795352, 954970, 956572, 994190, 1195715, 1246768, 1527952, 1558460, 1590704, 1909940, 1913144, 1988380, 2391430, 2883151, 3116920, 3819880, 3826288, 3976760, 4782860, 5766302, 6233840, 6935147, 7639760, 7953520, 8848291, 9565720, 11532604, 13870294, 14415755, 17696582, 19131440, 23065208, 27740588, 28831510, 34675735, 35393164, 44241455, 46130416, 55481176, 57663020, 69351470, 70786328, 88482910, 110962352, 115326040, 138702940, 141572656, 176965820, 230652080, 256600439, 277405880, 353931640, 513200878, 554811760, 707863280, 1026401756, 1283002195, 2052803512, 2566004390, 4105607024, 5132008780, 10264017560, 20528035120]

約数ペア:

[(1, 20528035120), (2, 10264017560), (4, 5132008780), (5, 4105607024), (8, 2566004390), (10, 2052803512), (16, 1283002195), (20, 1026401756), (29, 707863280), (37, 554811760), (40, 513200878), (58, 353931640), (74, 277405880), (80, 256600439), (89, 230652080), (116, 176965820), (145, 141572656), (148, 138702940), (178, 115326040), (185, 110962352), (232, 88482910), (290, 70786328), (296, 69351470), (356, 57663020), (370, 55481176), (445, 46130416), (464, 44241455), (580, 35393164), (592, 34675735), (712, 28831510), (740, 27740588), (890, 23065208), (1073, 19131440), (1160, 17696582), (1424, 14415755), (1480, 13870294), (1780, 11532604), (2146, 9565720), (2320, 8848291), (2581, 7953520), (2687, 7639760), (2960, 6935147), (3293, 6233840), (3560, 5766302), (4292, 4782860), (5162, 3976760), (5365, 3826288), (5374, 3819880), (6586, 3116920), (7120, 2883151), (8584, 2391430), (10324, 1988380), (10730, 1913144), (10748, 1909940), (12905, 1590704), (13172, 1558460), (13435, 1527952), (16465, 1246768), (17168, 1195715), (20648, 994190), (21460, 956572), (21496, 954970), (25810, 795352), (26344, 779230), (26870, 763976), (32930, 623384), (41296, 497095), (42920, 478286), (42992, 477485), (51620, 397676), (52688, 389615), (53740, 381988), (65860, 311692), (77923, 263440), (85840, 239143), (95497, 214960), (99419, 206480), (103240, 198838), (107480, 190994), (131720, 155846)]