81185020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{579893}}^1$

素因数の和:579909

約数の個数: 24

約数和(自身を含む): 194844384

約数和(自身を除く): 113659364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 579893, 1159786, 2319572, 2899465, 4059251, 5798930, 8118502, 11597860, 16237004, 20296255, 40592510, 81185020]

約数ペア:

[(1, 81185020), (2, 40592510), (4, 20296255), (5, 16237004), (7, 11597860), (10, 8118502), (14, 5798930), (20, 4059251), (28, 2899465), (35, 2319572), (70, 1159786), (140, 579893)]