20489104

素因数分解:

$2^4\times {\mathrm{811}}^1\times {\mathrm{1579}}^1$

素因数の和:2398

約数の個数: 20

約数和(自身を含む): 39771760

約数和(自身を除く): 19282656

約数列:

[1, 2, 4, 8, 16, 811, 1579, 1622, 3158, 3244, 6316, 6488, 12632, 12976, 25264, 1280569, 2561138, 5122276, 10244552, 20489104]

約数ペア:

[(1, 20489104), (2, 10244552), (4, 5122276), (8, 2561138), (16, 1280569), (811, 25264), (1579, 12976), (1622, 12632), (3158, 6488), (3244, 6316)]