21747128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3121}}^1$

素因数の和:3207

約数の個数: 32

約数和(自身を含む): 44582160

約数和(自身を除く): 22835032

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3121, 3484, 6242, 6968, 12484, 24968, 40573, 81146, 162292, 209107, 324584, 418214, 836428, 1672856, 2718391, 5436782, 10873564, 21747128]

約数ペア:

[(1, 21747128), (2, 10873564), (4, 5436782), (8, 2718391), (13, 1672856), (26, 836428), (52, 418214), (67, 324584), (104, 209107), (134, 162292), (268, 81146), (536, 40573), (871, 24968), (1742, 12484), (3121, 6968), (3484, 6242)]