8177980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21521}}^1$

素因数の和:21549

約数の個数: 24

約数和(自身を含む): 18078480

約数和(自身を除く): 9900500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 21521, 43042, 86084, 107605, 215210, 408899, 430420, 817798, 1635596, 2044495, 4088990, 8177980]

約数ペア:

[(1, 8177980), (2, 4088990), (4, 2044495), (5, 1635596), (10, 817798), (19, 430420), (20, 408899), (38, 215210), (76, 107605), (95, 86084), (190, 43042), (380, 21521)]