20954375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{2579}}^1$

素因数の和:2612

約数の個数: 20

約数和(自身を含む): 28209720

約数和(自身を除く): 7255345

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 2579, 8125, 12895, 33527, 64475, 167635, 322375, 838175, 1611875, 4190875, 20954375]

約数ペア:

[(1, 20954375), (5, 4190875), (13, 1611875), (25, 838175), (65, 322375), (125, 167635), (325, 64475), (625, 33527), (1625, 12895), (2579, 8125)]