18991744

素因数分解:

$2^7\times {\mathrm{23}}^1\times {\mathrm{6451}}^1$

素因数の和:6488

約数の個数: 32

約数和(自身を含む): 39486240

約数和(自身を除く): 20494496

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 92, 128, 184, 368, 736, 1472, 2944, 6451, 12902, 25804, 51608, 103216, 148373, 206432, 296746, 412864, 593492, 825728, 1186984, 2373968, 4747936, 9495872, 18991744]

約数ペア:

[(1, 18991744), (2, 9495872), (4, 4747936), (8, 2373968), (16, 1186984), (23, 825728), (32, 593492), (46, 412864), (64, 296746), (92, 206432), (128, 148373), (184, 103216), (368, 51608), (736, 25804), (1472, 12902), (2944, 6451)]