19718708

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{709}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 36678600

約数和(自身を除く): 16959892

約数列:

[1, 2, 4, 17, 34, 68, 409, 709, 818, 1418, 1636, 2836, 6953, 12053, 13906, 24106, 27812, 48212, 289981, 579962, 1159924, 4929677, 9859354, 19718708]

約数ペア:

[(1, 19718708), (2, 9859354), (4, 4929677), (17, 1159924), (34, 579962), (68, 289981), (409, 48212), (709, 27812), (818, 24106), (1418, 13906), (1636, 12053), (2836, 6953)]