21048890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123817}}^1$

素因数の和:123841

約数の個数: 16

約数和(自身を含む): 40117032

約数和(自身を除く): 19068142

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123817, 247634, 619085, 1238170, 2104889, 4209778, 10524445, 21048890]

約数ペア:

[(1, 21048890), (2, 10524445), (5, 4209778), (10, 2104889), (17, 1238170), (34, 619085), (85, 247634), (170, 123817)]