20208285

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1217}}^1$

素因数の和:1275

約数の個数: 40

約数和(自身を含む): 37139256

約数和(自身を除く): 16930971

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 369, 405, 615, 1107, 1217, 1845, 3321, 3651, 5535, 6085, 10953, 16605, 18255, 32859, 49897, 54765, 98577, 149691, 164295, 249485, 449073, 492885, 748455, 1347219, 2245365, 4041657, 6736095, 20208285]

約数ペア:

[(1, 20208285), (3, 6736095), (5, 4041657), (9, 2245365), (15, 1347219), (27, 748455), (41, 492885), (45, 449073), (81, 249485), (123, 164295), (135, 149691), (205, 98577), (369, 54765), (405, 49897), (615, 32859), (1107, 18255), (1217, 16605), (1845, 10953), (3321, 6085), (3651, 5535)]