20498984

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3191}}^1$

素因数の和:3281

約数の個数: 32

約数和(自身を含む): 42517440

約数和(自身を除く): 22018456

約数列:

[1, 2, 4, 8, 11, 22, 44, 73, 88, 146, 292, 584, 803, 1606, 3191, 3212, 6382, 6424, 12764, 25528, 35101, 70202, 140404, 232943, 280808, 465886, 931772, 1863544, 2562373, 5124746, 10249492, 20498984]

約数ペア:

[(1, 20498984), (2, 10249492), (4, 5124746), (8, 2562373), (11, 1863544), (22, 931772), (44, 465886), (73, 280808), (88, 232943), (146, 140404), (292, 70202), (584, 35101), (803, 25528), (1606, 12764), (3191, 6424), (3212, 6382)]