20920025

素因数分解:

$5^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{691}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 29861184

約数和(自身を除く): 8941159

約数列:

[1, 5, 7, 25, 35, 173, 175, 691, 865, 1211, 3455, 4325, 4837, 6055, 17275, 24185, 30275, 119543, 120925, 597715, 836801, 2988575, 4184005, 20920025]

約数ペア:

[(1, 20920025), (5, 4184005), (7, 2988575), (25, 836801), (35, 597715), (173, 120925), (175, 119543), (691, 30275), (865, 24185), (1211, 17275), (3455, 6055), (4325, 4837)]