208995940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{1901}}^1$

素因数の和:2172

約数の個数: 48

約数和(自身を含む): 460131840

約数和(自身を除く): 251135900

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 239, 460, 478, 956, 1195, 1901, 2390, 3802, 4780, 5497, 7604, 9505, 10994, 19010, 21988, 27485, 38020, 43723, 54970, 87446, 109940, 174892, 218615, 437230, 454339, 874460, 908678, 1817356, 2271695, 4543390, 9086780, 10449797, 20899594, 41799188, 52248985, 104497970, 208995940]

約数ペア:

[(1, 208995940), (2, 104497970), (4, 52248985), (5, 41799188), (10, 20899594), (20, 10449797), (23, 9086780), (46, 4543390), (92, 2271695), (115, 1817356), (230, 908678), (239, 874460), (460, 454339), (478, 437230), (956, 218615), (1195, 174892), (1901, 109940), (2390, 87446), (3802, 54970), (4780, 43723), (5497, 38020), (7604, 27485), (9505, 21988), (10994, 19010)]