18815225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 28956480

約数和(自身を除く): 10141255

約数列:

[1, 5, 11, 13, 19, 25, 55, 65, 95, 143, 209, 247, 275, 277, 325, 475, 715, 1045, 1235, 1385, 2717, 3047, 3575, 3601, 5225, 5263, 6175, 6925, 13585, 15235, 18005, 26315, 39611, 57893, 67925, 68419, 76175, 90025, 131575, 198055, 289465, 342095, 752609, 990275, 1447325, 1710475, 3763045, 18815225]

約数ペア:

[(1, 18815225), (5, 3763045), (11, 1710475), (13, 1447325), (19, 990275), (25, 752609), (55, 342095), (65, 289465), (95, 198055), (143, 131575), (209, 90025), (247, 76175), (275, 68419), (277, 67925), (325, 57893), (475, 39611), (715, 26315), (1045, 18005), (1235, 15235), (1385, 13585), (2717, 6925), (3047, 6175), (3575, 5263), (3601, 5225)]