20868631

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5742569

約数列:

[1, 7, 19, 41, 43, 89, 133, 287, 301, 623, 779, 817, 1691, 1763, 3649, 3827, 5453, 5719, 11837, 12341, 25543, 26789, 33497, 69331, 72713, 156907, 234479, 485317, 508991, 1098349, 2981233, 20868631]

約数ペア:

[(1, 20868631), (7, 2981233), (19, 1098349), (41, 508991), (43, 485317), (89, 234479), (133, 156907), (287, 72713), (301, 69331), (623, 33497), (779, 26789), (817, 25543), (1691, 12341), (1763, 11837), (3649, 5719), (3827, 5453)]