20639605

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{757}}^1$

素因数の和:829

約数の個数: 32

約数和(自身を含む): 30562560

約数和(自身を除く): 9922955

約数列:

[1, 5, 7, 19, 35, 41, 95, 133, 205, 287, 665, 757, 779, 1435, 3785, 3895, 5299, 5453, 14383, 26495, 27265, 31037, 71915, 100681, 155185, 217259, 503405, 589703, 1086295, 2948515, 4127921, 20639605]

約数ペア:

[(1, 20639605), (5, 4127921), (7, 2948515), (19, 1086295), (35, 589703), (41, 503405), (95, 217259), (133, 155185), (205, 100681), (287, 71915), (665, 31037), (757, 27265), (779, 26495), (1435, 14383), (3785, 5453), (3895, 5299)]