17881968

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{28657}}^1$

素因数の和:28681

約数の個数: 40

約数和(自身を含む): 49750288

約数和(自身を除く): 31868320

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 28657, 57314, 85971, 114628, 171942, 229256, 343884, 372541, 458512, 687768, 745082, 1117623, 1375536, 1490164, 2235246, 2980328, 4470492, 5960656, 8940984, 17881968]

約数ペア:

[(1, 17881968), (2, 8940984), (3, 5960656), (4, 4470492), (6, 2980328), (8, 2235246), (12, 1490164), (13, 1375536), (16, 1117623), (24, 745082), (26, 687768), (39, 458512), (48, 372541), (52, 343884), (78, 229256), (104, 171942), (156, 114628), (208, 85971), (312, 57314), (624, 28657)]