20840346

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 47848320

約数和(自身を除く): 27007974

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 71, 138, 142, 207, 213, 414, 426, 639, 709, 1278, 1418, 1633, 2127, 3266, 4254, 4899, 6381, 9798, 12762, 14697, 16307, 29394, 32614, 48921, 50339, 97842, 100678, 146763, 151017, 293526, 302034, 453051, 906102, 1157797, 2315594, 3473391, 6946782, 10420173, 20840346]

約数ペア:

[(1, 20840346), (2, 10420173), (3, 6946782), (6, 3473391), (9, 2315594), (18, 1157797), (23, 906102), (46, 453051), (69, 302034), (71, 293526), (138, 151017), (142, 146763), (207, 100678), (213, 97842), (414, 50339), (426, 48921), (639, 32614), (709, 29394), (1278, 16307), (1418, 14697), (1633, 12762), (2127, 9798), (3266, 6381), (4254, 4899)]