21681033

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{229}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33561600

約数和(自身を除く): 11880567

約数列:

[1, 3, 11, 19, 33, 57, 151, 209, 229, 453, 627, 687, 1661, 2519, 2869, 4351, 4983, 7557, 8607, 13053, 31559, 34579, 47861, 94677, 103737, 143583, 380369, 657001, 1141107, 1971003, 7227011, 21681033]

約数ペア:

[(1, 21681033), (3, 7227011), (11, 1971003), (19, 1141107), (33, 657001), (57, 380369), (151, 143583), (209, 103737), (229, 94677), (453, 47861), (627, 34579), (687, 31559), (1661, 13053), (2519, 8607), (2869, 7557), (4351, 4983)]