21669345

素因数分解:

$3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1087}}^1$

素因数の和:1541

約数の個数: 24

約数和(自身を含む): 37679616

約数和(自身を除く): 16010271

約数列:

[1, 3, 5, 9, 15, 45, 443, 1087, 1329, 2215, 3261, 3987, 5435, 6645, 9783, 16305, 19935, 48915, 481541, 1444623, 2407705, 4333869, 7223115, 21669345]

約数ペア:

[(1, 21669345), (3, 7223115), (5, 4333869), (9, 2407705), (15, 1444623), (45, 481541), (443, 48915), (1087, 19935), (1329, 16305), (2215, 9783), (3261, 6645), (3987, 5435)]