21404745

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3631}}^1$

素因数の和:3773

約数の個数: 24

約数和(自身を含む): 37395072

約数和(自身を除く): 15990327

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3631, 5895, 10893, 18155, 32679, 54465, 163395, 475661, 1426983, 2378305, 4280949, 7134915, 21404745]

約数ペア:

[(1, 21404745), (3, 7134915), (5, 4280949), (9, 2378305), (15, 1426983), (45, 475661), (131, 163395), (393, 54465), (655, 32679), (1179, 18155), (1965, 10893), (3631, 5895)]