19421780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{138727}}^1$

素因数の和:138743

約数の個数: 24

約数和(自身を含む): 46612608

約数和(自身を除く): 27190828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 138727, 277454, 554908, 693635, 971089, 1387270, 1942178, 2774540, 3884356, 4855445, 9710890, 19421780]

約数ペア:

[(1, 19421780), (2, 9710890), (4, 4855445), (5, 3884356), (7, 2774540), (10, 1942178), (14, 1387270), (20, 971089), (28, 693635), (35, 554908), (70, 277454), (140, 138727)]