21079395

素因数分解:

$3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1327}}^1$

素因数の和:1691

約数の個数: 24

約数和(自身を含む): 36668736

約数和(自身を除く): 15589341

約数列:

[1, 3, 5, 9, 15, 45, 353, 1059, 1327, 1765, 3177, 3981, 5295, 6635, 11943, 15885, 19905, 59715, 468431, 1405293, 2342155, 4215879, 7026465, 21079395]

約数ペア:

[(1, 21079395), (3, 7026465), (5, 4215879), (9, 2342155), (15, 1405293), (45, 468431), (353, 59715), (1059, 19905), (1327, 15885), (1765, 11943), (3177, 6635), (3981, 5295)]