16905

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1$

素因数の和:45

約数の個数: 24

約数和(自身を含む): 32832

約数和(自身を除く): 15927

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 2415, 3381, 5635, 16905]

約数ペア:

[(1, 16905), (3, 5635), (5, 3381), (7, 2415), (15, 1127), (21, 805), (23, 735), (35, 483), (49, 345), (69, 245), (105, 161), (115, 147)]