28754375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3539}}^1$

素因数の和:3572

約数の個数: 20

約数和(自身を含む): 38706360

約数和(自身を除く): 9951985

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3539, 8125, 17695, 46007, 88475, 230035, 442375, 1150175, 2211875, 5750875, 28754375]

約数ペア:

[(1, 28754375), (5, 5750875), (13, 2211875), (25, 1150175), (65, 442375), (125, 230035), (325, 88475), (625, 46007), (1625, 17695), (3539, 8125)]