20998124

素因数分解:

$2^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1889}}^1$

素因数の和:2297

約数の個数: 24

約数和(自身を含む): 42124320

約数和(自身を除く): 21126196

約数列:

[1, 2, 4, 7, 14, 28, 397, 794, 1588, 1889, 2779, 3778, 5558, 7556, 11116, 13223, 26446, 52892, 749933, 1499866, 2999732, 5249531, 10499062, 20998124]

約数ペア:

[(1, 20998124), (2, 10499062), (4, 5249531), (7, 2999732), (14, 1499866), (28, 749933), (397, 52892), (794, 26446), (1588, 13223), (1889, 11116), (2779, 7556), (3778, 5558)]