21271550

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:437

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 20913250

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 53, 106, 115, 230, 265, 349, 530, 575, 698, 1150, 1219, 1325, 1745, 2438, 2650, 3490, 6095, 8027, 8725, 12190, 16054, 17450, 18497, 30475, 36994, 40135, 60950, 80270, 92485, 184970, 200675, 401350, 425431, 462425, 850862, 924850, 2127155, 4254310, 10635775, 21271550]

約数ペア:

[(1, 21271550), (2, 10635775), (5, 4254310), (10, 2127155), (23, 924850), (25, 850862), (46, 462425), (50, 425431), (53, 401350), (106, 200675), (115, 184970), (230, 92485), (265, 80270), (349, 60950), (530, 40135), (575, 36994), (698, 30475), (1150, 18497), (1219, 17450), (1325, 16054), (1745, 12190), (2438, 8725), (2650, 8027), (3490, 6095)]