64387040

素因数分解:

$2^5\times 5^1\times {\mathrm{402419}}^1$

素因数の和:402434

約数の個数: 24

約数和(自身を含む): 152114760

約数和(自身を除く): 87727720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 402419, 804838, 1609676, 2012095, 3219352, 4024190, 6438704, 8048380, 12877408, 16096760, 32193520, 64387040]

約数ペア:

[(1, 64387040), (2, 32193520), (4, 16096760), (5, 12877408), (8, 8048380), (10, 6438704), (16, 4024190), (20, 3219352), (32, 2012095), (40, 1609676), (80, 804838), (160, 402419)]