402207620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 857304000

約数和(自身を除く): 455096380

約数列:

[1, 2, 4, 5, 10, 20, 139, 149, 278, 298, 556, 596, 695, 745, 971, 1390, 1490, 1942, 2780, 2980, 3884, 4855, 9710, 19420, 20711, 41422, 82844, 103555, 134969, 144679, 207110, 269938, 289358, 414220, 539876, 578716, 674845, 723395, 1349690, 1446790, 2699380, 2893580, 20110381, 40220762, 80441524, 100551905, 201103810, 402207620]

約数ペア:

[(1, 402207620), (2, 201103810), (4, 100551905), (5, 80441524), (10, 40220762), (20, 20110381), (139, 2893580), (149, 2699380), (278, 1446790), (298, 1349690), (556, 723395), (596, 674845), (695, 578716), (745, 539876), (971, 414220), (1390, 289358), (1490, 269938), (1942, 207110), (2780, 144679), (2980, 134969), (3884, 103555), (4855, 82844), (9710, 41422), (19420, 20711)]