21586957

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{641}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 26255232

約数和(自身を除く): 4668275

約数列:

[1, 7, 17, 119, 283, 641, 1981, 4487, 4811, 10897, 33677, 76279, 181403, 1269821, 3083851, 21586957]

約数ペア:

[(1, 21586957), (7, 3083851), (17, 1269821), (119, 181403), (283, 76279), (641, 33677), (1981, 10897), (4487, 4811)]