131805680

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{12973}}^1$

素因数の和:13113

約数の個数: 40

約数和(自身を含む): 308884992

約数和(自身を除く): 177079312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 12973, 25946, 51892, 64865, 103784, 129730, 207568, 259460, 518920, 1037840, 1647571, 3295142, 6590284, 8237855, 13180568, 16475710, 26361136, 32951420, 65902840, 131805680]

約数ペア:

[(1, 131805680), (2, 65902840), (4, 32951420), (5, 26361136), (8, 16475710), (10, 13180568), (16, 8237855), (20, 6590284), (40, 3295142), (80, 1647571), (127, 1037840), (254, 518920), (508, 259460), (635, 207568), (1016, 129730), (1270, 103784), (2032, 64865), (2540, 51892), (5080, 25946), (10160, 12973)]