80515960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{287557}}^1$

素因数の和:287575

約数の個数: 32

約数和(自身を含む): 207041760

約数和(自身を除く): 126525800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 287557, 575114, 1150228, 1437785, 2012899, 2300456, 2875570, 4025798, 5751140, 8051596, 10064495, 11502280, 16103192, 20128990, 40257980, 80515960]

約数ペア:

[(1, 80515960), (2, 40257980), (4, 20128990), (5, 16103192), (7, 11502280), (8, 10064495), (10, 8051596), (14, 5751140), (20, 4025798), (28, 2875570), (35, 2300456), (40, 2012899), (56, 1437785), (70, 1150228), (140, 575114), (280, 287557)]