156638405

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2927}}^1$

素因数の和:3089

約数の個数: 32

約数和(自身を含む): 236113920

約数和(自身を除く): 79475515

約数列:

[1, 5, 7, 11, 35, 55, 77, 139, 385, 695, 973, 1529, 2927, 4865, 7645, 10703, 14635, 20489, 32197, 53515, 102445, 160985, 225379, 406853, 1126895, 2034265, 2847971, 4475383, 14239855, 22376915, 31327681, 156638405]

約数ペア:

[(1, 156638405), (5, 31327681), (7, 22376915), (11, 14239855), (35, 4475383), (55, 2847971), (77, 2034265), (139, 1126895), (385, 406853), (695, 225379), (973, 160985), (1529, 102445), (2927, 53515), (4865, 32197), (7645, 20489), (10703, 14635)]