21282755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{907}}^1$

素因数の和:963

約数の個数: 24

約数和(自身を含む): 29059632

約数和(自身を除く): 7776877

約数列:

[1, 5, 13, 19, 65, 95, 247, 361, 907, 1235, 1805, 4535, 4693, 11791, 17233, 23465, 58955, 86165, 224029, 327427, 1120145, 1637135, 4256551, 21282755]

約数ペア:

[(1, 21282755), (5, 4256551), (13, 1637135), (19, 1120145), (65, 327427), (95, 224029), (247, 86165), (361, 58955), (907, 23465), (1235, 17233), (1805, 11791), (4535, 4693)]