20407915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7001}}^1$

素因数の和:7070

約数の個数: 16

約数和(自身を含む): 27223776

約数和(自身を除く): 6815861

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7001, 35005, 77011, 371053, 385055, 1855265, 4081583, 20407915]

約数ペア:

[(1, 20407915), (5, 4081583), (11, 1855265), (53, 385055), (55, 371053), (265, 77011), (583, 35005), (2915, 7001)]