639948

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{3137}}^1$

素因数の和:3161

約数の個数: 24

約数和(自身を含む): 1581552

約数和(自身を除く): 941604

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 3137, 6274, 9411, 12548, 18822, 37644, 53329, 106658, 159987, 213316, 319974, 639948]

約数ペア:

[(1, 639948), (2, 319974), (3, 213316), (4, 159987), (6, 106658), (12, 53329), (17, 37644), (34, 18822), (51, 12548), (68, 9411), (102, 6274), (204, 3137)]