21417129

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6449}}^1$

素因数の和:6502

約数の個数: 20

約数和(自身を含む): 32778900

約数和(自身を除く): 11361771

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6449, 19347, 58041, 174123, 264409, 522369, 793227, 2379681, 7139043, 21417129]

約数ペア:

[(1, 21417129), (3, 7139043), (9, 2379681), (27, 793227), (41, 522369), (81, 264409), (123, 174123), (369, 58041), (1107, 19347), (3321, 6449)]