21625865

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1087}}^1$

素因数の和:1288

約数の個数: 16

約数和(自身を含む): 27260928

約数和(自身を除く): 5635063

約数列:

[1, 5, 23, 115, 173, 865, 1087, 3979, 5435, 19895, 25001, 125005, 188051, 940255, 4325173, 21625865]

約数ペア:

[(1, 21625865), (5, 4325173), (23, 940255), (115, 188051), (173, 125005), (865, 25001), (1087, 19895), (3979, 5435)]