318408280

素因数分解:

$2^3\times 5^1\times {\mathrm{7960207}}^1$

素因数の和:7960218

約数の個数: 16

約数和(自身を含む): 716418720

約数和(自身を除く): 398010440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7960207, 15920414, 31840828, 39801035, 63681656, 79602070, 159204140, 318408280]

約数ペア:

[(1, 318408280), (2, 159204140), (4, 79602070), (5, 63681656), (8, 39801035), (10, 31840828), (20, 15920414), (40, 7960207)]