1021405

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 1559520

約数和(自身を除く): 538115

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 379, 385, 539, 1895, 2653, 2695, 4169, 13265, 18571, 20845, 29183, 92855, 145915, 204281, 1021405]

約数ペア:

[(1, 1021405), (5, 204281), (7, 145915), (11, 92855), (35, 29183), (49, 20845), (55, 18571), (77, 13265), (245, 4169), (379, 2695), (385, 2653), (539, 1895)]