18205168

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:661

約数の個数: 40

約数和(自身を含む): 36926208

約数和(自身を除く): 18721040

約数列:

[1, 2, 4, 8, 16, 43, 47, 86, 94, 172, 188, 344, 376, 563, 688, 752, 1126, 2021, 2252, 4042, 4504, 8084, 9008, 16168, 24209, 26461, 32336, 48418, 52922, 96836, 105844, 193672, 211688, 387344, 423376, 1137823, 2275646, 4551292, 9102584, 18205168]

約数ペア:

[(1, 18205168), (2, 9102584), (4, 4551292), (8, 2275646), (16, 1137823), (43, 423376), (47, 387344), (86, 211688), (94, 193672), (172, 105844), (188, 96836), (344, 52922), (376, 48418), (563, 32336), (688, 26461), (752, 24209), (1126, 16168), (2021, 9008), (2252, 8084), (4042, 4504)]