81788021

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{1667}}^1$

素因数の和:1880

約数の個数: 16

約数和(自身を含む): 96290304

約数和(自身を除く): 14502283

約数列:

[1, 7, 43, 163, 301, 1141, 1667, 7009, 11669, 49063, 71681, 271721, 501767, 1902047, 11684003, 81788021]

約数ペア:

[(1, 81788021), (7, 11684003), (43, 1902047), (163, 501767), (301, 271721), (1141, 71681), (1667, 49063), (7009, 11669)]