21960765

素因数分解:

$3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1217}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 38191608

約数和(自身を除く): 16230843

約数列:

[1, 3, 5, 9, 15, 45, 401, 1203, 1217, 2005, 3609, 3651, 6015, 6085, 10953, 18045, 18255, 54765, 488017, 1464051, 2440085, 4392153, 7320255, 21960765]

約数ペア:

[(1, 21960765), (3, 7320255), (5, 4392153), (9, 2440085), (15, 1464051), (45, 488017), (401, 54765), (1203, 18255), (1217, 18045), (2005, 10953), (3609, 6085), (3651, 6015)]