20797640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17929}}^1$

素因数の和:17969

約数の個数: 32

約数和(自身を含む): 48411000

約数和(自身を除く): 27613360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17929, 35858, 71716, 89645, 143432, 179290, 358580, 519941, 717160, 1039882, 2079764, 2599705, 4159528, 5199410, 10398820, 20797640]

約数ペア:

[(1, 20797640), (2, 10398820), (4, 5199410), (5, 4159528), (8, 2599705), (10, 2079764), (20, 1039882), (29, 717160), (40, 519941), (58, 358580), (116, 179290), (145, 143432), (232, 89645), (290, 71716), (580, 35858), (1160, 17929)]