881225020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{47737}}^1$

素因数の和:47830

約数の個数: 48

約数和(自身を含む): 2021035968

約数和(自身を除く): 1139810948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 9230, 18460, 47737, 95474, 190948, 238685, 477370, 620581, 954740, 1241162, 2482324, 3102905, 3389327, 6205810, 6778654, 12411620, 13557308, 16946635, 33893270, 44061251, 67786540, 88122502, 176245004, 220306255, 440612510, 881225020]

約数ペア:

[(1, 881225020), (2, 440612510), (4, 220306255), (5, 176245004), (10, 88122502), (13, 67786540), (20, 44061251), (26, 33893270), (52, 16946635), (65, 13557308), (71, 12411620), (130, 6778654), (142, 6205810), (260, 3389327), (284, 3102905), (355, 2482324), (710, 1241162), (923, 954740), (1420, 620581), (1846, 477370), (3692, 238685), (4615, 190948), (9230, 95474), (18460, 47737)]