639608

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{4703}}^1$

素因数の和:4726

約数の個数: 16

約数和(自身を含む): 1270080

約数和(自身を除く): 630472

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 4703, 9406, 18812, 37624, 79951, 159902, 319804, 639608]

約数ペア:

[(1, 639608), (2, 319804), (4, 159902), (8, 79951), (17, 37624), (34, 18812), (68, 9406), (136, 4703)]