20789665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 28576800

約数和(自身を除く): 7787135

約数列:

[1, 5, 13, 29, 41, 65, 145, 205, 269, 377, 533, 1189, 1345, 1885, 2665, 3497, 5945, 7801, 11029, 15457, 17485, 39005, 55145, 77285, 101413, 143377, 319841, 507065, 716885, 1599205, 4157933, 20789665]

約数ペア:

[(1, 20789665), (5, 4157933), (13, 1599205), (29, 716885), (41, 507065), (65, 319841), (145, 143377), (205, 101413), (269, 77285), (377, 55145), (533, 39005), (1189, 17485), (1345, 15457), (1885, 11029), (2665, 7801), (3497, 5945)]