81539220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194141}}^1$

素因数の和:194160

約数の個数: 48

約数和(自身を含む): 260926848

約数和(自身を除く): 179387628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194141, 388282, 582423, 776564, 970705, 1164846, 1358987, 1941410, 2329692, 2717974, 2912115, 3882820, 4076961, 5435948, 5824230, 6794935, 8153922, 11648460, 13589870, 16307844, 20384805, 27179740, 40769610, 81539220]

約数ペア:

[(1, 81539220), (2, 40769610), (3, 27179740), (4, 20384805), (5, 16307844), (6, 13589870), (7, 11648460), (10, 8153922), (12, 6794935), (14, 5824230), (15, 5435948), (20, 4076961), (21, 3882820), (28, 2912115), (30, 2717974), (35, 2329692), (42, 1941410), (60, 1358987), (70, 1164846), (84, 970705), (105, 776564), (140, 582423), (210, 388282), (420, 194141)]