8218925

素因数分解:

$5^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 48

約数和(自身を含む): 12707520

約数和(自身を除く): 4488595

約数列:

[1, 5, 11, 13, 19, 25, 55, 65, 95, 121, 143, 209, 247, 275, 325, 475, 605, 715, 1045, 1235, 1331, 1573, 2299, 2717, 3025, 3575, 5225, 6175, 6655, 7865, 11495, 13585, 17303, 25289, 29887, 33275, 39325, 57475, 67925, 86515, 126445, 149435, 328757, 432575, 632225, 747175, 1643785, 8218925]

約数ペア:

[(1, 8218925), (5, 1643785), (11, 747175), (13, 632225), (19, 432575), (25, 328757), (55, 149435), (65, 126445), (95, 86515), (121, 67925), (143, 57475), (209, 39325), (247, 33275), (275, 29887), (325, 25289), (475, 17303), (605, 13585), (715, 11495), (1045, 7865), (1235, 6655), (1331, 6175), (1573, 5225), (2299, 3575), (2717, 3025)]