164568400

素因数分解:

$2^4\times 5^2\times {\mathrm{411421}}^1$

素因数の和:411439

約数の個数: 30

約数和(自身を含む): 395376542

約数和(自身を除く): 230808142

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 411421, 822842, 1645684, 2057105, 3291368, 4114210, 6582736, 8228420, 10285525, 16456840, 20571050, 32913680, 41142100, 82284200, 164568400]

約数ペア:

[(1, 164568400), (2, 82284200), (4, 41142100), (5, 32913680), (8, 20571050), (10, 16456840), (16, 10285525), (20, 8228420), (25, 6582736), (40, 4114210), (50, 3291368), (80, 2057105), (100, 1645684), (200, 822842), (400, 411421)]