20781679359

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1951}}^1\times {\mathrm{29837}}^1$

素因数の和:31815

約数の個数: 32

約数和(自身を含む): 33548414976

約数和(自身を除く): 12766735617

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 1951, 5853, 13657, 29837, 33167, 40971, 89511, 99501, 208859, 232169, 507229, 626577, 696507, 1521687, 3550603, 10651809, 58211987, 174635961, 407483909, 989603779, 1222451727, 2968811337, 6927226453, 20781679359]

約数ペア:

[(1, 20781679359), (3, 6927226453), (7, 2968811337), (17, 1222451727), (21, 989603779), (51, 407483909), (119, 174635961), (357, 58211987), (1951, 10651809), (5853, 3550603), (13657, 1521687), (29837, 696507), (33167, 626577), (40971, 507229), (89511, 232169), (99501, 208859)]