628778899

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{983}}^1$

素因数の和:1179

約数の個数: 32

約数和(自身を含む): 782161920

約数和(自身を除く): 153383021

約数列:

[1, 7, 23, 29, 137, 161, 203, 667, 959, 983, 3151, 3973, 4669, 6881, 22057, 22609, 27811, 28507, 91379, 134671, 158263, 199549, 639653, 655661, 942697, 3097433, 3905459, 4589627, 21682031, 27338213, 89825557, 628778899]

約数ペア:

[(1, 628778899), (7, 89825557), (23, 27338213), (29, 21682031), (137, 4589627), (161, 3905459), (203, 3097433), (667, 942697), (959, 655661), (983, 639653), (3151, 199549), (3973, 158263), (4669, 134671), (6881, 91379), (22057, 28507), (22609, 27811)]