21561124

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 43355200

約数和(自身を除く): 21794076

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 139, 157, 247, 278, 314, 494, 556, 628, 988, 1807, 2041, 2641, 2983, 3614, 4082, 5282, 5966, 7228, 8164, 10564, 11932, 21823, 34333, 38779, 43646, 68666, 77558, 87292, 137332, 155116, 283699, 414637, 567398, 829274, 1134796, 1658548, 5390281, 10780562, 21561124]

約数ペア:

[(1, 21561124), (2, 10780562), (4, 5390281), (13, 1658548), (19, 1134796), (26, 829274), (38, 567398), (52, 414637), (76, 283699), (139, 155116), (157, 137332), (247, 87292), (278, 77558), (314, 68666), (494, 43646), (556, 38779), (628, 34333), (988, 21823), (1807, 11932), (2041, 10564), (2641, 8164), (2983, 7228), (3614, 5966), (4082, 5282)]