20912800

素因数分解:

$2^5\times 5^2\times {\mathrm{26141}}^1$

素因数の和:26161

約数の個数: 36

約数和(自身を含む): 51055326

約数和(自身を除く): 30142526

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26141, 52282, 104564, 130705, 209128, 261410, 418256, 522820, 653525, 836512, 1045640, 1307050, 2091280, 2614100, 4182560, 5228200, 10456400, 20912800]

約数ペア:

[(1, 20912800), (2, 10456400), (4, 5228200), (5, 4182560), (8, 2614100), (10, 2091280), (16, 1307050), (20, 1045640), (25, 836512), (32, 653525), (40, 522820), (50, 418256), (80, 261410), (100, 209128), (160, 130705), (200, 104564), (400, 52282), (800, 26141)]