1661891

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:322

約数の個数: 16

約数和(自身を含む): 2101248

約数和(自身を除く): 439357

約数列:

[1, 7, 11, 77, 113, 191, 791, 1243, 1337, 2101, 8701, 14707, 21583, 151081, 237413, 1661891]

約数ペア:

[(1, 1661891), (7, 237413), (11, 151081), (77, 21583), (113, 14707), (191, 8701), (791, 2101), (1243, 1337)]