21739090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127877}}^1$

素因数の和:127901

約数の個数: 16

約数和(自身を含む): 41432472

約数和(自身を除く): 19693382

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 127877, 255754, 639385, 1278770, 2173909, 4347818, 10869545, 21739090]

約数ペア:

[(1, 21739090), (2, 10869545), (5, 4347818), (10, 2173909), (17, 1278770), (34, 639385), (85, 255754), (170, 127877)]