21029810

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23629}}^1$

素因数の和:23725

約数の個数: 16

約数和(自身を含む): 38280600

約数和(自身を除く): 17250790

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23629, 47258, 118145, 236290, 2102981, 4205962, 10514905, 21029810]

約数ペア:

[(1, 21029810), (2, 10514905), (5, 4205962), (10, 2102981), (89, 236290), (178, 118145), (445, 47258), (890, 23629)]