8122780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 17781120

約数和(自身を除く): 9658340

約数列:

[1, 2, 4, 5, 10, 20, 53, 79, 97, 106, 158, 194, 212, 265, 316, 388, 395, 485, 530, 790, 970, 1060, 1580, 1940, 4187, 5141, 7663, 8374, 10282, 15326, 16748, 20564, 20935, 25705, 30652, 38315, 41870, 51410, 76630, 83740, 102820, 153260, 406139, 812278, 1624556, 2030695, 4061390, 8122780]

約数ペア:

[(1, 8122780), (2, 4061390), (4, 2030695), (5, 1624556), (10, 812278), (20, 406139), (53, 153260), (79, 102820), (97, 83740), (106, 76630), (158, 51410), (194, 41870), (212, 38315), (265, 30652), (316, 25705), (388, 20935), (395, 20564), (485, 16748), (530, 15326), (790, 10282), (970, 8374), (1060, 7663), (1580, 5141), (1940, 4187)]