21096705

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28703}}^1$

素因数の和:28725

約数の個数: 24

約数和(自身を含む): 39267072

約数和(自身を除く): 18170367

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28703, 86109, 143515, 200921, 430545, 602763, 1004605, 1406447, 3013815, 4219341, 7032235, 21096705]

約数ペア:

[(1, 21096705), (3, 7032235), (5, 4219341), (7, 3013815), (15, 1406447), (21, 1004605), (35, 602763), (49, 430545), (105, 200921), (147, 143515), (245, 86109), (735, 28703)]