20710520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12041}}^1$

素因数の和:12095

約数の個数: 32

約数和(自身を含む): 47686320

約数和(自身を除く): 26975800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12041, 24082, 48164, 60205, 96328, 120410, 240820, 481640, 517763, 1035526, 2071052, 2588815, 4142104, 5177630, 10355260, 20710520]

約数ペア:

[(1, 20710520), (2, 10355260), (4, 5177630), (5, 4142104), (8, 2588815), (10, 2071052), (20, 1035526), (40, 517763), (43, 481640), (86, 240820), (172, 120410), (215, 96328), (344, 60205), (430, 48164), (860, 24082), (1720, 12041)]