21277245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 39453120

約数和(自身を除く): 18175875

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 121, 165, 209, 285, 363, 605, 617, 627, 1045, 1815, 1851, 2299, 3085, 3135, 6787, 6897, 9255, 11495, 11723, 20361, 33935, 34485, 35169, 58615, 74657, 101805, 128953, 175845, 223971, 373285, 386859, 644765, 1119855, 1418483, 1934295, 4255449, 7092415, 21277245]

約数ペア:

[(1, 21277245), (3, 7092415), (5, 4255449), (11, 1934295), (15, 1418483), (19, 1119855), (33, 644765), (55, 386859), (57, 373285), (95, 223971), (121, 175845), (165, 128953), (209, 101805), (285, 74657), (363, 58615), (605, 35169), (617, 34485), (627, 33935), (1045, 20361), (1815, 11723), (1851, 11495), (2299, 9255), (3085, 6897), (3135, 6787)]