20514879

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4229}}^1$

素因数の和:4260

約数の個数: 36

約数和(自身を含む): 37613160

約数和(自身を除く): 17098281

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4229, 4851, 12687, 29603, 38061, 46519, 88809, 139557, 207221, 266427, 325633, 418671, 621663, 976899, 1864989, 2279431, 2930697, 6838293, 20514879]

約数ペア:

[(1, 20514879), (3, 6838293), (7, 2930697), (9, 2279431), (11, 1864989), (21, 976899), (33, 621663), (49, 418671), (63, 325633), (77, 266427), (99, 207221), (147, 139557), (231, 88809), (441, 46519), (539, 38061), (693, 29603), (1617, 12687), (4229, 4851)]