20405320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39241}}^1$

素因数の和:39265

約数の個数: 32

約数和(自身を含む): 49444920

約数和(自身を除く): 29039600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39241, 78482, 156964, 196205, 313928, 392410, 510133, 784820, 1020266, 1569640, 2040532, 2550665, 4081064, 5101330, 10202660, 20405320]

約数ペア:

[(1, 20405320), (2, 10202660), (4, 5101330), (5, 4081064), (8, 2550665), (10, 2040532), (13, 1569640), (20, 1020266), (26, 784820), (40, 510133), (52, 392410), (65, 313928), (104, 196205), (130, 156964), (260, 78482), (520, 39241)]