21586375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:244

約数の個数: 32

約数和(自身を含む): 29016000

約数和(自身を除く): 7429625

約数列:

[1, 5, 19, 25, 61, 95, 125, 149, 305, 475, 745, 1159, 1525, 2375, 2831, 3725, 5795, 7625, 9089, 14155, 18625, 28975, 45445, 70775, 144875, 172691, 227225, 353875, 863455, 1136125, 4317275, 21586375]

約数ペア:

[(1, 21586375), (5, 4317275), (19, 1136125), (25, 863455), (61, 353875), (95, 227225), (125, 172691), (149, 144875), (305, 70775), (475, 45445), (745, 28975), (1159, 18625), (1525, 14155), (2375, 9089), (2831, 7625), (3725, 5795)]