21339400

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4639}}^1$

素因数の和:4678

約数の個数: 48

約数和(自身を含む): 51782400

約数和(自身を除く): 30443000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4600, 4639, 9278, 18556, 23195, 37112, 46390, 92780, 106697, 115975, 185560, 213394, 231950, 426788, 463900, 533485, 853576, 927800, 1066970, 2133940, 2667425, 4267880, 5334850, 10669700, 21339400]

約数ペア:

[(1, 21339400), (2, 10669700), (4, 5334850), (5, 4267880), (8, 2667425), (10, 2133940), (20, 1066970), (23, 927800), (25, 853576), (40, 533485), (46, 463900), (50, 426788), (92, 231950), (100, 213394), (115, 185560), (184, 115975), (200, 106697), (230, 92780), (460, 46390), (575, 37112), (920, 23195), (1150, 18556), (2300, 9278), (4600, 4639)]