21628365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6899}}^1$

素因数の和:6937

約数の個数: 32

約数和(自身を含む): 39744000

約数和(自身を除く): 18115635

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6899, 20697, 34495, 75889, 103485, 131081, 227667, 379445, 393243, 655405, 1138335, 1441891, 1966215, 4325673, 7209455, 21628365]

約数ペア:

[(1, 21628365), (3, 7209455), (5, 4325673), (11, 1966215), (15, 1441891), (19, 1138335), (33, 655405), (55, 393243), (57, 379445), (95, 227667), (165, 131081), (209, 103485), (285, 75889), (627, 34495), (1045, 20697), (3135, 6899)]