18828368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:843

約数の個数: 40

約数和(自身を含む): 39643296

約数和(自身を除く): 20814928

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 131, 208, 262, 524, 691, 1048, 1382, 1703, 2096, 2764, 3406, 5528, 6812, 8983, 11056, 13624, 17966, 27248, 35932, 71864, 90521, 143728, 181042, 362084, 724168, 1176773, 1448336, 2353546, 4707092, 9414184, 18828368]

約数ペア:

[(1, 18828368), (2, 9414184), (4, 4707092), (8, 2353546), (13, 1448336), (16, 1176773), (26, 724168), (52, 362084), (104, 181042), (131, 143728), (208, 90521), (262, 71864), (524, 35932), (691, 27248), (1048, 17966), (1382, 13624), (1703, 11056), (2096, 8983), (2764, 6812), (3406, 5528)]