7821880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{613}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 19893600

約数和(自身を除く): 12071720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 613, 638, 1160, 1226, 1276, 1595, 2452, 2552, 3065, 3190, 4904, 6130, 6380, 6743, 12260, 12760, 13486, 17777, 24520, 26972, 33715, 35554, 53944, 67430, 71108, 88885, 134860, 142216, 177770, 195547, 269720, 355540, 391094, 711080, 782188, 977735, 1564376, 1955470, 3910940, 7821880]

約数ペア:

[(1, 7821880), (2, 3910940), (4, 1955470), (5, 1564376), (8, 977735), (10, 782188), (11, 711080), (20, 391094), (22, 355540), (29, 269720), (40, 195547), (44, 177770), (55, 142216), (58, 134860), (88, 88885), (110, 71108), (116, 67430), (145, 53944), (220, 35554), (232, 33715), (290, 26972), (319, 24520), (440, 17777), (580, 13486), (613, 12760), (638, 12260), (1160, 6743), (1226, 6380), (1276, 6130), (1595, 4904), (2452, 3190), (2552, 3065)]