20998060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{409}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 47113920

約数和(自身を除く): 26115860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 151, 170, 302, 340, 409, 604, 755, 818, 1510, 1636, 2045, 2567, 3020, 4090, 5134, 6953, 8180, 10268, 12835, 13906, 25670, 27812, 34765, 51340, 61759, 69530, 123518, 139060, 247036, 308795, 617590, 1049903, 1235180, 2099806, 4199612, 5249515, 10499030, 20998060]

約数ペア:

[(1, 20998060), (2, 10499030), (4, 5249515), (5, 4199612), (10, 2099806), (17, 1235180), (20, 1049903), (34, 617590), (68, 308795), (85, 247036), (151, 139060), (170, 123518), (302, 69530), (340, 61759), (409, 51340), (604, 34765), (755, 27812), (818, 25670), (1510, 13906), (1636, 12835), (2045, 10268), (2567, 8180), (3020, 6953), (4090, 5134)]