78820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{563}}^1$

素因数の和:579

約数の個数: 24

約数和(自身を含む): 189504

約数和(自身を除く): 110684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 563, 1126, 2252, 2815, 3941, 5630, 7882, 11260, 15764, 19705, 39410, 78820]

約数ペア:

[(1, 78820), (2, 39410), (4, 19705), (5, 15764), (7, 11260), (10, 7882), (14, 5630), (20, 3941), (28, 2815), (35, 2252), (70, 1126), (140, 563)]