20663019

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 34571264

約数和(自身を除く): 13908245

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 211, 243, 279, 351, 403, 633, 837, 1053, 1209, 1899, 2511, 2743, 3159, 3627, 5697, 6541, 7533, 8229, 10881, 17091, 19623, 24687, 32643, 51273, 58869, 74061, 85033, 97929, 176607, 222183, 255099, 529821, 666549, 765297, 1589463, 2295891, 6887673, 20663019]

約数ペア:

[(1, 20663019), (3, 6887673), (9, 2295891), (13, 1589463), (27, 765297), (31, 666549), (39, 529821), (81, 255099), (93, 222183), (117, 176607), (211, 97929), (243, 85033), (279, 74061), (351, 58869), (403, 51273), (633, 32643), (837, 24687), (1053, 19623), (1209, 17091), (1899, 10881), (2511, 8229), (2743, 7533), (3159, 6541), (3627, 5697)]