20777590

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17713610

約数列:

[1, 2, 5, 10, 53, 106, 197, 199, 265, 394, 398, 530, 985, 995, 1970, 1990, 10441, 10547, 20882, 21094, 39203, 52205, 52735, 78406, 104410, 105470, 196015, 392030, 2077759, 4155518, 10388795, 20777590]

約数ペア:

[(1, 20777590), (2, 10388795), (5, 4155518), (10, 2077759), (53, 392030), (106, 196015), (197, 105470), (199, 104410), (265, 78406), (394, 52735), (398, 52205), (530, 39203), (985, 21094), (995, 20882), (1970, 10547), (1990, 10441)]