20516823

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{487}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 30857216

約数和(自身を除く): 10340393

約数列:

[1, 3, 9, 31, 93, 151, 279, 453, 487, 1359, 1461, 4383, 4681, 14043, 15097, 42129, 45291, 73537, 135873, 220611, 661833, 2279647, 6838941, 20516823]

約数ペア:

[(1, 20516823), (3, 6838941), (9, 2279647), (31, 661833), (93, 220611), (151, 135873), (279, 73537), (453, 45291), (487, 42129), (1359, 15097), (1461, 14043), (4383, 4681)]