21719816

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{613}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 42144960

約数和(自身を除く): 20425144

約数列:

[1, 2, 4, 8, 43, 86, 103, 172, 206, 344, 412, 613, 824, 1226, 2452, 4429, 4904, 8858, 17716, 26359, 35432, 52718, 63139, 105436, 126278, 210872, 252556, 505112, 2714977, 5429954, 10859908, 21719816]

約数ペア:

[(1, 21719816), (2, 10859908), (4, 5429954), (8, 2714977), (43, 505112), (86, 252556), (103, 210872), (172, 126278), (206, 105436), (344, 63139), (412, 52718), (613, 35432), (824, 26359), (1226, 17716), (2452, 8858), (4429, 4904)]