18229744

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{87643}}^1$

素因数の和:87664

約数の個数: 20

約数和(自身を含む): 38037496

約数和(自身を除く): 19807752

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 87643, 175286, 350572, 701144, 1139359, 1402288, 2278718, 4557436, 9114872, 18229744]

約数ペア:

[(1, 18229744), (2, 9114872), (4, 4557436), (8, 2278718), (13, 1402288), (16, 1139359), (26, 701144), (52, 350572), (104, 175286), (208, 87643)]