21184228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1327}}^1$

素因数の和:1651

約数の個数: 24

約数和(自身を含む): 40084352

約数和(自身を除く): 18900124

約数列:

[1, 2, 4, 13, 26, 52, 307, 614, 1228, 1327, 2654, 3991, 5308, 7982, 15964, 17251, 34502, 69004, 407389, 814778, 1629556, 5296057, 10592114, 21184228]

約数ペア:

[(1, 21184228), (2, 10592114), (4, 5296057), (13, 1629556), (26, 814778), (52, 407389), (307, 69004), (614, 34502), (1228, 17251), (1327, 15964), (2654, 7982), (3991, 5308)]