20928856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3299}}^1$

素因数の和:3379

約数の個数: 32

約数和(自身を含む): 42966000

約数和(自身を除く): 22037144

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3299, 6344, 6598, 13196, 26392, 42887, 85774, 171548, 201239, 343096, 402478, 804956, 1609912, 2616107, 5232214, 10464428, 20928856]

約数ペア:

[(1, 20928856), (2, 10464428), (4, 5232214), (8, 2616107), (13, 1609912), (26, 804956), (52, 402478), (61, 343096), (104, 201239), (122, 171548), (244, 85774), (488, 42887), (793, 26392), (1586, 13196), (3172, 6598), (3299, 6344)]