20781930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4099}}^1$

素因数の和:4135

約数の個数: 48

約数和(自身を含む): 54021600

約数和(自身を除く): 33239670

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4099, 5070, 8198, 12297, 20495, 24594, 40990, 53287, 61485, 106574, 122970, 159861, 266435, 319722, 532870, 692731, 799305, 1385462, 1598610, 2078193, 3463655, 4156386, 6927310, 10390965, 20781930]

約数ペア:

[(1, 20781930), (2, 10390965), (3, 6927310), (5, 4156386), (6, 3463655), (10, 2078193), (13, 1598610), (15, 1385462), (26, 799305), (30, 692731), (39, 532870), (65, 319722), (78, 266435), (130, 159861), (169, 122970), (195, 106574), (338, 61485), (390, 53287), (507, 40990), (845, 24594), (1014, 20495), (1690, 12297), (2535, 8198), (4099, 5070)]