81216916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{4111}}^1$

素因数の和:4575

約数の個数: 24

約数和(自身を含む): 155433600

約数和(自身を除く): 74216684

約数列:

[1, 2, 4, 11, 22, 44, 449, 898, 1796, 4111, 4939, 8222, 9878, 16444, 19756, 45221, 90442, 180884, 1845839, 3691678, 7383356, 20304229, 40608458, 81216916]

約数ペア:

[(1, 81216916), (2, 40608458), (4, 20304229), (11, 7383356), (22, 3691678), (44, 1845839), (449, 180884), (898, 90442), (1796, 45221), (4111, 19756), (4939, 16444), (8222, 9878)]