20990268

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{44851}}^1$

素因数の和:44874

約数の個数: 36

約数和(自身を含む): 57141448

約数和(自身を除く): 36151180

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 44851, 89702, 134553, 179404, 269106, 403659, 538212, 583063, 807318, 1166126, 1614636, 1749189, 2332252, 3498378, 5247567, 6996756, 10495134, 20990268]

約数ペア:

[(1, 20990268), (2, 10495134), (3, 6996756), (4, 5247567), (6, 3498378), (9, 2332252), (12, 1749189), (13, 1614636), (18, 1166126), (26, 807318), (36, 583063), (39, 538212), (52, 403659), (78, 269106), (117, 179404), (156, 134553), (234, 89702), (468, 44851)]