21180195

素因数分解:

$3^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1087}}^1$

素因数の和:1531

約数の個数: 24

約数和(自身を含む): 36830976

約数和(自身を除く): 15650781

約数列:

[1, 3, 5, 9, 15, 45, 433, 1087, 1299, 2165, 3261, 3897, 5435, 6495, 9783, 16305, 19485, 48915, 470671, 1412013, 2353355, 4236039, 7060065, 21180195]

約数ペア:

[(1, 21180195), (3, 7060065), (5, 4236039), (9, 2353355), (15, 1412013), (45, 470671), (433, 48915), (1087, 19485), (1299, 16305), (2165, 9783), (3261, 6495), (3897, 5435)]