398335870

素因数分解:

$2^1\times 5^1\times {\mathrm{9941}}^1\times {\mathrm{4007}}^1$

素因数の和:13955

約数の個数: 16

約数和(自身を含む): 717255648

約数和(自身を除く): 318919778

約数列:

[1, 2, 5, 10, 4007, 8014, 9941, 19882, 20035, 40070, 49705, 99410, 39833587, 79667174, 199167935, 398335870]

約数ペア:

[(1, 398335870), (2, 199167935), (5, 79667174), (10, 39833587), (4007, 99410), (8014, 49705), (9941, 40070), (19882, 20035)]