388978840

素因数分解:

$2^3\times 5^1\times {\mathrm{9724471}}^1$

素因数の和:9724482

約数の個数: 16

約数和(自身を含む): 875202480

約数和(自身を除く): 486223640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9724471, 19448942, 38897884, 48622355, 77795768, 97244710, 194489420, 388978840]

約数ペア:

[(1, 388978840), (2, 194489420), (4, 97244710), (5, 77795768), (8, 48622355), (10, 38897884), (20, 19448942), (40, 9724471)]