78864775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{29}}^2\times {\mathrm{31}}^1$

素因数の和:121

約数の個数: 54

約数和(自身を含む): 114916256

約数和(自身を除く): 36051481

約数列:

[1, 5, 11, 25, 29, 31, 55, 121, 145, 155, 275, 319, 341, 605, 725, 775, 841, 899, 1595, 1705, 3025, 3509, 3751, 4205, 4495, 7975, 8525, 9251, 9889, 17545, 18755, 21025, 22475, 26071, 46255, 49445, 87725, 93775, 101761, 108779, 130355, 231275, 247225, 286781, 508805, 543895, 651775, 1433905, 2544025, 2719475, 3154591, 7169525, 15772955, 78864775]

約数ペア:

[(1, 78864775), (5, 15772955), (11, 7169525), (25, 3154591), (29, 2719475), (31, 2544025), (55, 1433905), (121, 651775), (145, 543895), (155, 508805), (275, 286781), (319, 247225), (341, 231275), (605, 130355), (725, 108779), (775, 101761), (841, 93775), (899, 87725), (1595, 49445), (1705, 46255), (3025, 26071), (3509, 22475), (3751, 21025), (4205, 18755), (4495, 17545), (7975, 9889), (8525, 9251)]