20489144

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10369}}^1$

素因数の和:10407

約数の個数: 32

約数和(自身を含む): 43554000

約数和(自身を除く): 23064856

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10369, 20738, 41476, 82952, 134797, 197011, 269594, 394022, 539188, 788044, 1078376, 1576088, 2561143, 5122286, 10244572, 20489144]

約数ペア:

[(1, 20489144), (2, 10244572), (4, 5122286), (8, 2561143), (13, 1576088), (19, 1078376), (26, 788044), (38, 539188), (52, 394022), (76, 269594), (104, 197011), (152, 134797), (247, 82952), (494, 41476), (988, 20738), (1976, 10369)]