12781020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{30431}}^1$

素因数の和:30450

約数の個数: 48

約数和(自身を含む): 40900608

約数和(自身を除く): 28119588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 30431, 60862, 91293, 121724, 152155, 182586, 213017, 304310, 365172, 426034, 456465, 608620, 639051, 852068, 912930, 1065085, 1278102, 1825860, 2130170, 2556204, 3195255, 4260340, 6390510, 12781020]

約数ペア:

[(1, 12781020), (2, 6390510), (3, 4260340), (4, 3195255), (5, 2556204), (6, 2130170), (7, 1825860), (10, 1278102), (12, 1065085), (14, 912930), (15, 852068), (20, 639051), (21, 608620), (28, 456465), (30, 426034), (35, 365172), (42, 304310), (60, 213017), (70, 182586), (84, 152155), (105, 121724), (140, 91293), (210, 60862), (420, 30431)]