21621195

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9421}}^1$

素因数の和:9452

約数の個数: 32

約数和(自身を含む): 40703040

約数和(自身を除く): 19081845

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9421, 28263, 47105, 84789, 141315, 160157, 254367, 423945, 480471, 800785, 1271835, 1441413, 2402355, 4324239, 7207065, 21621195]

約数ペア:

[(1, 21621195), (3, 7207065), (5, 4324239), (9, 2402355), (15, 1441413), (17, 1271835), (27, 800785), (45, 480471), (51, 423945), (85, 254367), (135, 160157), (153, 141315), (255, 84789), (459, 47105), (765, 28263), (2295, 9421)]