21728565

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11777}}^1$

素因数の和:11829

約数の個数: 24

約数和(自身を含む): 38584728

約数和(自身を除く): 16856163

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11777, 35331, 58885, 105993, 176655, 482857, 529965, 1448571, 2414285, 4345713, 7242855, 21728565]

約数ペア:

[(1, 21728565), (3, 7242855), (5, 4345713), (9, 2414285), (15, 1448571), (41, 529965), (45, 482857), (123, 176655), (205, 105993), (369, 58885), (615, 35331), (1845, 11777)]