219620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:227

約数の個数: 24

約数和(自身を含む): 470400

約数和(自身を除く): 250780

約数列:

[1, 2, 4, 5, 10, 20, 79, 139, 158, 278, 316, 395, 556, 695, 790, 1390, 1580, 2780, 10981, 21962, 43924, 54905, 109810, 219620]

約数ペア:

[(1, 219620), (2, 109810), (4, 54905), (5, 43924), (10, 21962), (20, 10981), (79, 2780), (139, 1580), (158, 1390), (278, 790), (316, 695), (395, 556)]