21090025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1447}}^1$

素因数の和:1521

約数の個数: 24

約数和(自身を含む): 29087424

約数和(自身を除く): 7997399

約数列:

[1, 5, 11, 25, 53, 55, 265, 275, 583, 1325, 1447, 2915, 7235, 14575, 15917, 36175, 76691, 79585, 383455, 397925, 843601, 1917275, 4218005, 21090025]

約数ペア:

[(1, 21090025), (5, 4218005), (11, 1917275), (25, 843601), (53, 397925), (55, 383455), (265, 79585), (275, 76691), (583, 36175), (1325, 15917), (1447, 14575), (2915, 7235)]