20864792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{457}}^1$

素因数の和:915

約数の個数: 32

約数和(自身を含む): 42319200

約数和(自身を除く): 21454408

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 439, 457, 878, 914, 1756, 1828, 3512, 3656, 5707, 5941, 11414, 11882, 22828, 23764, 45656, 47528, 200623, 401246, 802492, 1604984, 2608099, 5216198, 10432396, 20864792]

約数ペア:

[(1, 20864792), (2, 10432396), (4, 5216198), (8, 2608099), (13, 1604984), (26, 802492), (52, 401246), (104, 200623), (439, 47528), (457, 45656), (878, 23764), (914, 22828), (1756, 11882), (1828, 11414), (3512, 5941), (3656, 5707)]