28786875

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1181}}^1$

素因数の和:1217

約数の個数: 40

約数和(自身を含む): 51695952

約数和(自身を除く): 22909077

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 975, 1181, 1625, 1875, 3543, 4875, 5905, 8125, 15353, 17715, 24375, 29525, 46059, 76765, 88575, 147625, 230295, 383825, 442875, 738125, 1151475, 1919125, 2214375, 5757375, 9595625, 28786875]

約数ペア:

[(1, 28786875), (3, 9595625), (5, 5757375), (13, 2214375), (15, 1919125), (25, 1151475), (39, 738125), (65, 442875), (75, 383825), (125, 230295), (195, 147625), (325, 88575), (375, 76765), (625, 46059), (975, 29525), (1181, 24375), (1625, 17715), (1875, 15353), (3543, 8125), (4875, 5905)]