20802006

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:517

約数の個数: 48

約数和(自身を含む): 46938528

約数和(自身を除く): 26136522

約数列:

[1, 2, 3, 6, 9, 18, 41, 71, 82, 123, 142, 213, 246, 369, 397, 426, 639, 738, 794, 1191, 1278, 2382, 2911, 3573, 5822, 7146, 8733, 16277, 17466, 26199, 28187, 32554, 48831, 52398, 56374, 84561, 97662, 146493, 169122, 253683, 292986, 507366, 1155667, 2311334, 3467001, 6934002, 10401003, 20802006]

約数ペア:

[(1, 20802006), (2, 10401003), (3, 6934002), (6, 3467001), (9, 2311334), (18, 1155667), (41, 507366), (71, 292986), (82, 253683), (123, 169122), (142, 146493), (213, 97662), (246, 84561), (369, 56374), (397, 52398), (426, 48831), (639, 32554), (738, 28187), (794, 26199), (1191, 17466), (1278, 16277), (2382, 8733), (2911, 7146), (3573, 5822)]