20647900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2269}}^1$

素因数の和:2303

約数の個数: 72

約数和(自身を含む): 55170080

約数和(自身を除く): 34522180

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2269, 2275, 4538, 4550, 9076, 9100, 11345, 15883, 22690, 29497, 31766, 45380, 56725, 58994, 63532, 79415, 113450, 117988, 147485, 158830, 206479, 226900, 294970, 317660, 397075, 412958, 589940, 737425, 794150, 825916, 1032395, 1474850, 1588300, 2064790, 2949700, 4129580, 5161975, 10323950, 20647900]

約数ペア:

[(1, 20647900), (2, 10323950), (4, 5161975), (5, 4129580), (7, 2949700), (10, 2064790), (13, 1588300), (14, 1474850), (20, 1032395), (25, 825916), (26, 794150), (28, 737425), (35, 589940), (50, 412958), (52, 397075), (65, 317660), (70, 294970), (91, 226900), (100, 206479), (130, 158830), (140, 147485), (175, 117988), (182, 113450), (260, 79415), (325, 63532), (350, 58994), (364, 56725), (455, 45380), (650, 31766), (700, 29497), (910, 22690), (1300, 15883), (1820, 11345), (2269, 9100), (2275, 9076), (4538, 4550)]