21210345

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2789}}^1$

素因数の和:2826

約数の個数: 36

約数和(自身を含む): 39824460

約数和(自身を除く): 18614115

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 2789, 7605, 8367, 13945, 25101, 36257, 41835, 108771, 125505, 181285, 326313, 471341, 543855, 1414023, 1631565, 2356705, 4242069, 7070115, 21210345]

約数ペア:

[(1, 21210345), (3, 7070115), (5, 4242069), (9, 2356705), (13, 1631565), (15, 1414023), (39, 543855), (45, 471341), (65, 326313), (117, 181285), (169, 125505), (195, 108771), (507, 41835), (585, 36257), (845, 25101), (1521, 13945), (2535, 8367), (2789, 7605)]