20447515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1151}}^1$

素因数の和:1203

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9412325

約数列:

[1, 5, 11, 17, 19, 55, 85, 95, 187, 209, 323, 935, 1045, 1151, 1615, 3553, 5755, 12661, 17765, 19567, 21869, 63305, 97835, 109345, 215237, 240559, 371773, 1076185, 1202795, 1858865, 4089503, 20447515]

約数ペア:

[(1, 20447515), (5, 4089503), (11, 1858865), (17, 1202795), (19, 1076185), (55, 371773), (85, 240559), (95, 215237), (187, 109345), (209, 97835), (323, 63305), (935, 21869), (1045, 19567), (1151, 17765), (1615, 12661), (3553, 5755)]