20772220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6451}}^1$

素因数の和:6490

約数の個数: 48

約数和(自身を含む): 52028928

約数和(自身を除く): 31256708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6451, 12902, 25804, 32255, 45157, 64510, 90314, 129020, 148373, 180628, 225785, 296746, 451570, 593492, 741865, 903140, 1038611, 1483730, 2077222, 2967460, 4154444, 5193055, 10386110, 20772220]

約数ペア:

[(1, 20772220), (2, 10386110), (4, 5193055), (5, 4154444), (7, 2967460), (10, 2077222), (14, 1483730), (20, 1038611), (23, 903140), (28, 741865), (35, 593492), (46, 451570), (70, 296746), (92, 225785), (115, 180628), (140, 148373), (161, 129020), (230, 90314), (322, 64510), (460, 45157), (644, 32255), (805, 25804), (1610, 12902), (3220, 6451)]