21397010

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13127}}^1$

素因数の和:13297

約数の個数: 16

約数和(自身を含む): 38753856

約数和(自身を除く): 17356846

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13127, 26254, 65635, 131270, 2139701, 4279402, 10698505, 21397010]

約数ペア:

[(1, 21397010), (2, 10698505), (5, 4279402), (10, 2139701), (163, 131270), (326, 65635), (815, 26254), (1630, 13127)]