21430815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3851}}^1$

素因数の和:3919

約数の個数: 32

約数和(自身を含む): 39937536

約数和(自身を除く): 18506721

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3851, 5565, 11553, 19255, 26957, 57765, 80871, 134785, 204103, 404355, 612309, 1020515, 1428721, 3061545, 4286163, 7143605, 21430815]

約数ペア:

[(1, 21430815), (3, 7143605), (5, 4286163), (7, 3061545), (15, 1428721), (21, 1020515), (35, 612309), (53, 404355), (105, 204103), (159, 134785), (265, 80871), (371, 57765), (795, 26957), (1113, 19255), (1855, 11553), (3851, 5565)]