1311590920

素因数分解:

$2^3\times 5^1\times {\mathrm{3533}}^1\times {\mathrm{9281}}^1$

素因数の和:12825

約数の個数: 32

約数和(自身を含む): 2952232920

約数和(自身を除く): 1640642000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3533, 7066, 9281, 14132, 17665, 18562, 28264, 35330, 37124, 46405, 70660, 74248, 92810, 141320, 185620, 371240, 32789773, 65579546, 131159092, 163948865, 262318184, 327897730, 655795460, 1311590920]

約数ペア:

[(1, 1311590920), (2, 655795460), (4, 327897730), (5, 262318184), (8, 163948865), (10, 131159092), (20, 65579546), (40, 32789773), (3533, 371240), (7066, 185620), (9281, 141320), (14132, 92810), (17665, 74248), (18562, 70660), (28264, 46405), (35330, 37124)]