64564520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{15671}}^1$

素因数の和:15785

約数の個数: 32

約数和(自身を含む): 146689920

約数和(自身を除く): 82125400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 15671, 31342, 62684, 78355, 125368, 156710, 313420, 626840, 1614113, 3228226, 6456452, 8070565, 12912904, 16141130, 32282260, 64564520]

約数ペア:

[(1, 64564520), (2, 32282260), (4, 16141130), (5, 12912904), (8, 8070565), (10, 6456452), (20, 3228226), (40, 1614113), (103, 626840), (206, 313420), (412, 156710), (515, 125368), (824, 78355), (1030, 62684), (2060, 31342), (4120, 15671)]