21220510

素因数分解:

$2^1\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{1699}}^1$

素因数の和:2955

約数の個数: 16

約数和(自身を含む): 38250000

約数和(自身を除く): 17029490

約数列:

[1, 2, 5, 10, 1249, 1699, 2498, 3398, 6245, 8495, 12490, 16990, 2122051, 4244102, 10610255, 21220510]

約数ペア:

[(1, 21220510), (2, 10610255), (5, 4244102), (10, 2122051), (1249, 16990), (1699, 12490), (2498, 8495), (3398, 6245)]