21540020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63353}}^1$

素因数の和:63379

約数の個数: 24

約数和(自身を含む): 47895624

約数和(自身を除く): 26355604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63353, 126706, 253412, 316765, 633530, 1077001, 1267060, 2154002, 4308004, 5385005, 10770010, 21540020]

約数ペア:

[(1, 21540020), (2, 10770010), (4, 5385005), (5, 4308004), (10, 2154002), (17, 1267060), (20, 1077001), (34, 633530), (68, 316765), (85, 253412), (170, 126706), (340, 63353)]