20104929

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 32978792

約数和(自身を除く): 12873863

約数列:

[1, 3, 9, 13, 27, 39, 61, 81, 117, 183, 313, 351, 549, 793, 939, 1053, 1647, 2379, 2817, 4069, 4941, 7137, 8451, 12207, 19093, 21411, 25353, 36621, 57279, 64233, 109863, 171837, 248209, 329589, 515511, 744627, 1546533, 2233881, 6701643, 20104929]

約数ペア:

[(1, 20104929), (3, 6701643), (9, 2233881), (13, 1546533), (27, 744627), (39, 515511), (61, 329589), (81, 248209), (117, 171837), (183, 109863), (313, 64233), (351, 57279), (549, 36621), (793, 25353), (939, 21411), (1053, 19093), (1647, 12207), (2379, 8451), (2817, 7137), (4069, 4941)]