20180977580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1\times {\mathrm{38281}}^1$

素因数の和:38946

約数の個数: 48

約数和(自身を含む): 43437513504

約数和(自身を除く): 23256535924

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 613, 860, 1226, 2452, 3065, 6130, 12260, 26359, 38281, 52718, 76562, 105436, 131795, 153124, 191405, 263590, 382810, 527180, 765620, 1646083, 3292166, 6584332, 8230415, 16460830, 23466253, 32921660, 46932506, 93865012, 117331265, 234662530, 469325060, 1009048879, 2018097758, 4036195516, 5045244395, 10090488790, 20180977580]

約数ペア:

[(1, 20180977580), (2, 10090488790), (4, 5045244395), (5, 4036195516), (10, 2018097758), (20, 1009048879), (43, 469325060), (86, 234662530), (172, 117331265), (215, 93865012), (430, 46932506), (613, 32921660), (860, 23466253), (1226, 16460830), (2452, 8230415), (3065, 6584332), (6130, 3292166), (12260, 1646083), (26359, 765620), (38281, 527180), (52718, 382810), (76562, 263590), (105436, 191405), (131795, 153124)]