19721218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{30911}}^1$

素因数の和:30953

約数の個数: 16

約数和(自身を含む): 33384960

約数和(自身を除く): 13663742

約数列:

[1, 2, 11, 22, 29, 58, 319, 638, 30911, 61822, 340021, 680042, 896419, 1792838, 9860609, 19721218]

約数ペア:

[(1, 19721218), (2, 9860609), (11, 1792838), (22, 896419), (29, 680042), (58, 340021), (319, 61822), (638, 30911)]