18385328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 38674608

約数和(自身を除く): 20289280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 157, 208, 314, 563, 628, 1126, 1256, 2041, 2252, 2512, 4082, 4504, 7319, 8164, 9008, 14638, 16328, 29276, 32656, 58552, 88391, 117104, 176782, 353564, 707128, 1149083, 1414256, 2298166, 4596332, 9192664, 18385328]

約数ペア:

[(1, 18385328), (2, 9192664), (4, 4596332), (8, 2298166), (13, 1414256), (16, 1149083), (26, 707128), (52, 353564), (104, 176782), (157, 117104), (208, 88391), (314, 58552), (563, 32656), (628, 29276), (1126, 16328), (1256, 14638), (2041, 9008), (2252, 8164), (2512, 7319), (4082, 4504)]