21647385

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3911}}^1$

素因数の和:3966

約数の個数: 32

約数和(自身を含む): 39432960

約数和(自身を除く): 17785575

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 3911, 5535, 11733, 19555, 35199, 58665, 105597, 160351, 175995, 481053, 527985, 801755, 1443159, 2405265, 4329477, 7215795, 21647385]

約数ペア:

[(1, 21647385), (3, 7215795), (5, 4329477), (9, 2405265), (15, 1443159), (27, 801755), (41, 527985), (45, 481053), (123, 175995), (135, 160351), (205, 105597), (369, 58665), (615, 35199), (1107, 19555), (1845, 11733), (3911, 5535)]