21975265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2269}}^1$

素因数の和:2436

約数の個数: 16

約数和(自身を含む): 28602000

約数和(自身を除く): 6626735

約数列:

[1, 5, 13, 65, 149, 745, 1937, 2269, 9685, 11345, 29497, 147485, 338081, 1690405, 4395053, 21975265]

約数ペア:

[(1, 21975265), (5, 4395053), (13, 1690405), (65, 338081), (149, 147485), (745, 29497), (1937, 11345), (2269, 9685)]