20720154

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 51561216

約数和(自身を除く): 30841062

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 137, 182, 273, 274, 277, 411, 546, 554, 822, 831, 959, 1662, 1781, 1918, 1939, 2877, 3562, 3601, 3878, 5343, 5754, 5817, 7202, 10686, 10803, 11634, 12467, 21606, 24934, 25207, 37401, 37949, 50414, 74802, 75621, 75898, 113847, 151242, 227694, 265643, 493337, 531286, 796929, 986674, 1480011, 1593858, 2960022, 3453359, 6906718, 10360077, 20720154]

約数ペア:

[(1, 20720154), (2, 10360077), (3, 6906718), (6, 3453359), (7, 2960022), (13, 1593858), (14, 1480011), (21, 986674), (26, 796929), (39, 531286), (42, 493337), (78, 265643), (91, 227694), (137, 151242), (182, 113847), (273, 75898), (274, 75621), (277, 74802), (411, 50414), (546, 37949), (554, 37401), (822, 25207), (831, 24934), (959, 21606), (1662, 12467), (1781, 11634), (1918, 10803), (1939, 10686), (2877, 7202), (3562, 5817), (3601, 5754), (3878, 5343)]