12819980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{3581}}^1$

素因数の和:3769

約数の個数: 24

約数和(自身を含む): 27079920

約数和(自身を除く): 14259940

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 3581, 7162, 14324, 17905, 35810, 71620, 640999, 1281998, 2563996, 3204995, 6409990, 12819980]

約数ペア:

[(1, 12819980), (2, 6409990), (4, 3204995), (5, 2563996), (10, 1281998), (20, 640999), (179, 71620), (358, 35810), (716, 17905), (895, 14324), (1790, 7162), (3580, 3581)]