20504375

素因数分解:

$5^4\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:692

約数の個数: 20

約数和(自身を含む): 26147880

約数和(自身を除く): 5643505

約数列:

[1, 5, 25, 53, 125, 265, 619, 625, 1325, 3095, 6625, 15475, 32807, 33125, 77375, 164035, 386875, 820175, 4100875, 20504375]

約数ペア:

[(1, 20504375), (5, 4100875), (25, 820175), (53, 386875), (125, 164035), (265, 77375), (619, 33125), (625, 32807), (1325, 15475), (3095, 6625)]