21182015

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{1187}}^1$

素因数の和:1318

約数の個数: 16

約数和(自身を含む): 26345088

約数和(自身を除く): 5163073

約数列:

[1, 5, 43, 83, 215, 415, 1187, 3569, 5935, 17845, 51041, 98521, 255205, 492605, 4236403, 21182015]

約数ペア:

[(1, 21182015), (5, 4236403), (43, 492605), (83, 255205), (215, 98521), (415, 51041), (1187, 17845), (3569, 5935)]