20405648

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{34469}}^1$

素因数の和:34514

約数の個数: 20

約数和(自身を含む): 40605660

約数和(自身を除く): 20200012

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 34469, 68938, 137876, 275752, 551504, 1275353, 2550706, 5101412, 10202824, 20405648]

約数ペア:

[(1, 20405648), (2, 10202824), (4, 5101412), (8, 2550706), (16, 1275353), (37, 551504), (74, 275752), (148, 137876), (296, 68938), (592, 34469)]