20005969640

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{587}}^1\times {\mathrm{6709}}^1$

素因数の和:7434

約数の個数: 64

約数和(自身を含む): 45451929600

約数和(自身を除く): 25445959960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 587, 635, 1016, 1174, 1270, 2348, 2540, 2935, 4696, 5080, 5870, 6709, 11740, 13418, 23480, 26836, 33545, 53672, 67090, 74549, 134180, 149098, 268360, 298196, 372745, 596392, 745490, 852043, 1490980, 1704086, 2981960, 3408172, 3938183, 4260215, 6816344, 7876366, 8520430, 15752732, 17040860, 19690915, 31505464, 34081720, 39381830, 78763660, 157527320, 500149241, 1000298482, 2000596964, 2500746205, 4001193928, 5001492410, 10002984820, 20005969640]

約数ペア:

[(1, 20005969640), (2, 10002984820), (4, 5001492410), (5, 4001193928), (8, 2500746205), (10, 2000596964), (20, 1000298482), (40, 500149241), (127, 157527320), (254, 78763660), (508, 39381830), (587, 34081720), (635, 31505464), (1016, 19690915), (1174, 17040860), (1270, 15752732), (2348, 8520430), (2540, 7876366), (2935, 6816344), (4696, 4260215), (5080, 3938183), (5870, 3408172), (6709, 2981960), (11740, 1704086), (13418, 1490980), (23480, 852043), (26836, 745490), (33545, 596392), (53672, 372745), (67090, 298196), (74549, 268360), (134180, 149098)]