21097580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150697}}^1$

素因数の和:150713

約数の個数: 24

約数和(自身を含む): 50634528

約数和(自身を除く): 29536948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150697, 301394, 602788, 753485, 1054879, 1506970, 2109758, 3013940, 4219516, 5274395, 10548790, 21097580]

約数ペア:

[(1, 21097580), (2, 10548790), (4, 5274395), (5, 4219516), (7, 3013940), (10, 2109758), (14, 1506970), (20, 1054879), (28, 753485), (35, 602788), (70, 301394), (140, 150697)]