20581875

素因数分解:

$3^2\times 5^4\times {\mathrm{3659}}^1$

素因数の和:3685

約数の個数: 30

約数和(自身を含む): 37159980

約数和(自身を除く): 16578105

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3659, 5625, 10977, 18295, 32931, 54885, 91475, 164655, 274425, 457375, 823275, 1372125, 2286875, 4116375, 6860625, 20581875]

約数ペア:

[(1, 20581875), (3, 6860625), (5, 4116375), (9, 2286875), (15, 1372125), (25, 823275), (45, 457375), (75, 274425), (125, 164655), (225, 91475), (375, 54885), (625, 32931), (1125, 18295), (1875, 10977), (3659, 5625)]