21167422520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1\times {\mathrm{27409}}^1$

素因数の和:27912

約数の個数: 64

約数和(自身を含む): 48844620000

約数和(自身を除く): 27677197480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 449, 860, 898, 1720, 1796, 2245, 3592, 4490, 8980, 17960, 19307, 27409, 38614, 54818, 77228, 96535, 109636, 137045, 154456, 193070, 219272, 274090, 386140, 548180, 772280, 1096360, 1178587, 2357174, 4714348, 5892935, 9428696, 11785870, 12306641, 23571740, 24613282, 47143480, 49226564, 61533205, 98453128, 123066410, 246132820, 492265640, 529185563, 1058371126, 2116742252, 2645927815, 4233484504, 5291855630, 10583711260, 21167422520]

約数ペア:

[(1, 21167422520), (2, 10583711260), (4, 5291855630), (5, 4233484504), (8, 2645927815), (10, 2116742252), (20, 1058371126), (40, 529185563), (43, 492265640), (86, 246132820), (172, 123066410), (215, 98453128), (344, 61533205), (430, 49226564), (449, 47143480), (860, 24613282), (898, 23571740), (1720, 12306641), (1796, 11785870), (2245, 9428696), (3592, 5892935), (4490, 4714348), (8980, 2357174), (17960, 1178587), (19307, 1096360), (27409, 772280), (38614, 548180), (54818, 386140), (77228, 274090), (96535, 219272), (109636, 193070), (137045, 154456)]