21285930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{709531}}^1$

素因数の和:709541

約数の個数: 16

約数和(自身を含む): 51086304

約数和(自身を除く): 29800374

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 709531, 1419062, 2128593, 3547655, 4257186, 7095310, 10642965, 21285930]

約数ペア:

[(1, 21285930), (2, 10642965), (3, 7095310), (5, 4257186), (6, 3547655), (10, 2128593), (15, 1419062), (30, 709531)]