8681808400

素因数分解:

$2^4\times 5^2\times {\mathrm{21704521}}^1$

素因数の和:21704539

約数の個数: 30

約数和(自身を含む): 20858045642

約数和(自身を除く): 12176237242

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 21704521, 43409042, 86818084, 108522605, 173636168, 217045210, 347272336, 434090420, 542613025, 868180840, 1085226050, 1736361680, 2170452100, 4340904200, 8681808400]

約数ペア:

[(1, 8681808400), (2, 4340904200), (4, 2170452100), (5, 1736361680), (8, 1085226050), (10, 868180840), (16, 542613025), (20, 434090420), (25, 347272336), (40, 217045210), (50, 173636168), (80, 108522605), (100, 86818084), (200, 43409042), (400, 21704521)]