20476664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{491}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 41534640

約数和(自身を除く): 21057976

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 401, 491, 802, 982, 1604, 1964, 3208, 3928, 5213, 6383, 10426, 12766, 20852, 25532, 41704, 51064, 196891, 393782, 787564, 1575128, 2559583, 5119166, 10238332, 20476664]

約数ペア:

[(1, 20476664), (2, 10238332), (4, 5119166), (8, 2559583), (13, 1575128), (26, 787564), (52, 393782), (104, 196891), (401, 51064), (491, 41704), (802, 25532), (982, 20852), (1604, 12766), (1964, 10426), (3208, 6383), (3928, 5213)]