328520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 760320

約数和(自身を除く): 431800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 191, 215, 344, 382, 430, 764, 860, 955, 1528, 1720, 1910, 3820, 7640, 8213, 16426, 32852, 41065, 65704, 82130, 164260, 328520]

約数ペア:

[(1, 328520), (2, 164260), (4, 82130), (5, 65704), (8, 41065), (10, 32852), (20, 16426), (40, 8213), (43, 7640), (86, 3820), (172, 1910), (191, 1720), (215, 1528), (344, 955), (382, 860), (430, 764)]