28716961

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 39432960

約数和(自身を除く): 10715999

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 977, 1547, 1729, 2261, 4199, 6839, 12701, 16609, 18563, 29393, 88907, 116263, 129941, 215917, 241319, 315571, 1511419, 1689233, 2208997, 4102423, 28716961]

約数ペア:

[(1, 28716961), (7, 4102423), (13, 2208997), (17, 1689233), (19, 1511419), (91, 315571), (119, 241319), (133, 215917), (221, 129941), (247, 116263), (323, 88907), (977, 29393), (1547, 18563), (1729, 16609), (2261, 12701), (4199, 6839)]