19725580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140897}}^1$

素因数の和:140913

約数の個数: 24

約数和(自身を含む): 47341728

約数和(自身を除く): 27616148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140897, 281794, 563588, 704485, 986279, 1408970, 1972558, 2817940, 3945116, 4931395, 9862790, 19725580]

約数ペア:

[(1, 19725580), (2, 9862790), (4, 4931395), (5, 3945116), (7, 2817940), (10, 1972558), (14, 1408970), (20, 986279), (28, 704485), (35, 563588), (70, 281794), (140, 140897)]