20849260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{349}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 25014740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 103, 116, 145, 206, 290, 349, 412, 515, 580, 698, 1030, 1396, 1745, 2060, 2987, 3490, 5974, 6980, 10121, 11948, 14935, 20242, 29870, 35947, 40484, 50605, 59740, 71894, 101210, 143788, 179735, 202420, 359470, 718940, 1042463, 2084926, 4169852, 5212315, 10424630, 20849260]

約数ペア:

[(1, 20849260), (2, 10424630), (4, 5212315), (5, 4169852), (10, 2084926), (20, 1042463), (29, 718940), (58, 359470), (103, 202420), (116, 179735), (145, 143788), (206, 101210), (290, 71894), (349, 59740), (412, 50605), (515, 40484), (580, 35947), (698, 29870), (1030, 20242), (1396, 14935), (1745, 11948), (2060, 10121), (2987, 6980), (3490, 5974)]