20153875

素因数分解:

$5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{743}}^1$

素因数の和:796

約数の個数: 32

約数和(自身を含む): 29712384

約数和(自身を除く): 9558509

約数列:

[1, 5, 7, 25, 31, 35, 125, 155, 175, 217, 743, 775, 875, 1085, 3715, 3875, 5201, 5425, 18575, 23033, 26005, 27125, 92875, 115165, 130025, 161231, 575825, 650125, 806155, 2879125, 4030775, 20153875]

約数ペア:

[(1, 20153875), (5, 4030775), (7, 2879125), (25, 806155), (31, 650125), (35, 575825), (125, 161231), (155, 130025), (175, 115165), (217, 92875), (743, 27125), (775, 26005), (875, 23033), (1085, 18575), (3715, 5425), (3875, 5201)]