20538890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{120817}}^1$

素因数の和:120841

約数の個数: 16

約数和(自身を含む): 39145032

約数和(自身を除く): 18606142

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 120817, 241634, 604085, 1208170, 2053889, 4107778, 10269445, 20538890]

約数ペア:

[(1, 20538890), (2, 10269445), (5, 4107778), (10, 2053889), (17, 1208170), (34, 604085), (85, 241634), (170, 120817)]