20885176

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{491}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 42361200

約数和(自身を除く): 21476024

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 409, 491, 818, 982, 1636, 1964, 3272, 3928, 5317, 6383, 10634, 12766, 21268, 25532, 42536, 51064, 200819, 401638, 803276, 1606552, 2610647, 5221294, 10442588, 20885176]

約数ペア:

[(1, 20885176), (2, 10442588), (4, 5221294), (8, 2610647), (13, 1606552), (26, 803276), (52, 401638), (104, 200819), (409, 51064), (491, 42536), (818, 25532), (982, 21268), (1636, 12766), (1964, 10634), (3272, 6383), (3928, 5317)]