20778615

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3229}}^1$

素因数の和:3264

約数の個数: 48

約数和(自身を含む): 42325920

約数和(自身を除く): 21547305

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3229, 6435, 9687, 16145, 29061, 35519, 41977, 48435, 106557, 125931, 145305, 177595, 209885, 319671, 377793, 461747, 532785, 629655, 1385241, 1598355, 1888965, 2308735, 4155723, 6926205, 20778615]

約数ペア:

[(1, 20778615), (3, 6926205), (5, 4155723), (9, 2308735), (11, 1888965), (13, 1598355), (15, 1385241), (33, 629655), (39, 532785), (45, 461747), (55, 377793), (65, 319671), (99, 209885), (117, 177595), (143, 145305), (165, 125931), (195, 106557), (429, 48435), (495, 41977), (585, 35519), (715, 29061), (1287, 16145), (2145, 9687), (3229, 6435)]