121905

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{43}}^1$

素因数の和:67

約数の個数: 40

約数和(自身を含む): 255552

約数和(自身を除く): 133647

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 81, 105, 129, 135, 189, 215, 301, 315, 387, 405, 567, 645, 903, 945, 1161, 1505, 1935, 2709, 2835, 3483, 4515, 5805, 8127, 13545, 17415, 24381, 40635, 121905]

約数ペア:

[(1, 121905), (3, 40635), (5, 24381), (7, 17415), (9, 13545), (15, 8127), (21, 5805), (27, 4515), (35, 3483), (43, 2835), (45, 2709), (63, 1935), (81, 1505), (105, 1161), (129, 945), (135, 903), (189, 645), (215, 567), (301, 405), (315, 387)]