18770507

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:227

約数の個数: 24

約数和(自身を含む): 23199456

約数和(自身を除く): 4428949

約数列:

[1, 7, 23, 37, 137, 161, 259, 529, 851, 959, 3151, 3703, 5069, 5957, 19573, 22057, 35483, 72473, 116587, 137011, 507311, 816109, 2681501, 18770507]

約数ペア:

[(1, 18770507), (7, 2681501), (23, 816109), (37, 507311), (137, 137011), (161, 116587), (259, 72473), (529, 35483), (851, 22057), (959, 19573), (3151, 5957), (3703, 5069)]