128278840

素因数分解:

$2^3\times 5^1\times {\mathrm{3206971}}^1$

素因数の和:3206982

約数の個数: 16

約数和(自身を含む): 288627480

約数和(自身を除く): 160348640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3206971, 6413942, 12827884, 16034855, 25655768, 32069710, 64139420, 128278840]

約数ペア:

[(1, 128278840), (2, 64139420), (4, 32069710), (5, 25655768), (8, 16034855), (10, 12827884), (20, 6413942), (40, 3206971)]