645898

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:198

約数の個数: 24

約数和(自身を含む): 1134756

約数和(自身を除く): 488858

約数列:

[1, 2, 11, 17, 22, 34, 121, 157, 187, 242, 314, 374, 1727, 2057, 2669, 3454, 4114, 5338, 18997, 29359, 37994, 58718, 322949, 645898]

約数ペア:

[(1, 645898), (2, 322949), (11, 58718), (17, 37994), (22, 29359), (34, 18997), (121, 5338), (157, 4114), (187, 3454), (242, 2669), (314, 2057), (374, 1727)]