189990760

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{34171}}^1$

素因数の和:34321

約数の個数: 32

約数和(自身を含む): 430567200

約数和(自身を除く): 240576440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 34171, 68342, 136684, 170855, 273368, 341710, 683420, 1366840, 4749769, 9499538, 18999076, 23748845, 37998152, 47497690, 94995380, 189990760]

約数ペア:

[(1, 189990760), (2, 94995380), (4, 47497690), (5, 37998152), (8, 23748845), (10, 18999076), (20, 9499538), (40, 4749769), (139, 1366840), (278, 683420), (556, 341710), (695, 273368), (1112, 170855), (1390, 136684), (2780, 68342), (5560, 34171)]