25684420

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9239}}^1$

素因数の和:9387

約数の個数: 24

約数和(自身を含む): 54331200

約数和(自身を除く): 28646780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 9239, 18478, 36956, 46195, 92390, 184780, 1284221, 2568442, 5136884, 6421105, 12842210, 25684420]

約数ペア:

[(1, 25684420), (2, 12842210), (4, 6421105), (5, 5136884), (10, 2568442), (20, 1284221), (139, 184780), (278, 92390), (556, 46195), (695, 36956), (1390, 18478), (2780, 9239)]