289456880

素因数分解:

$2^4\times 5^1\times {\mathrm{3618211}}^1$

素因数の和:3618224

約数の個数: 20

約数和(自身を含む): 672987432

約数和(自身を除く): 383530552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3618211, 7236422, 14472844, 18091055, 28945688, 36182110, 57891376, 72364220, 144728440, 289456880]

約数ペア:

[(1, 289456880), (2, 144728440), (4, 72364220), (5, 57891376), (8, 36182110), (10, 28945688), (16, 18091055), (20, 14472844), (40, 7236422), (80, 3618211)]