31981809

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 46126080

約数和(自身を除く): 14144271

約数列:

[1, 3, 29, 43, 83, 87, 103, 129, 249, 309, 1247, 2407, 2987, 3569, 3741, 4429, 7221, 8549, 8961, 10707, 13287, 25647, 103501, 128441, 247921, 310503, 367607, 385323, 743763, 1102821, 10660603, 31981809]

約数ペア:

[(1, 31981809), (3, 10660603), (29, 1102821), (43, 743763), (83, 385323), (87, 367607), (103, 310503), (129, 247921), (249, 128441), (309, 103501), (1247, 25647), (2407, 13287), (2987, 10707), (3569, 8961), (3741, 8549), (4429, 7221)]