20491912

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2671}}^1$

素因数の和:2821

約数の個数: 32

約数和(自身を含む): 44248320

約数和(自身を除く): 23756408

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2671, 3836, 5342, 7672, 10684, 18697, 21368, 37394, 74788, 149576, 365927, 731854, 1463708, 2561489, 2927416, 5122978, 10245956, 20491912]

約数ペア:

[(1, 20491912), (2, 10245956), (4, 5122978), (7, 2927416), (8, 2561489), (14, 1463708), (28, 731854), (56, 365927), (137, 149576), (274, 74788), (548, 37394), (959, 21368), (1096, 18697), (1918, 10684), (2671, 7672), (3836, 5342)]