139857620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{998983}}^1$

素因数の和:998999

約数の個数: 24

約数和(自身を含む): 335658624

約数和(自身を除く): 195801004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 998983, 1997966, 3995932, 4994915, 6992881, 9989830, 13985762, 19979660, 27971524, 34964405, 69928810, 139857620]

約数ペア:

[(1, 139857620), (2, 69928810), (4, 34964405), (5, 27971524), (7, 19979660), (10, 13985762), (14, 9989830), (20, 6992881), (28, 4994915), (35, 3995932), (70, 1997966), (140, 998983)]