81723928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71437}}^1$

素因数の和:71467

約数の個数: 32

約数和(自身を含む): 180023760

約数和(自身を除く): 98299832

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 71437, 142874, 285748, 571496, 785807, 928681, 1571614, 1857362, 3143228, 3714724, 6286456, 7429448, 10215491, 20430982, 40861964, 81723928]

約数ペア:

[(1, 81723928), (2, 40861964), (4, 20430982), (8, 10215491), (11, 7429448), (13, 6286456), (22, 3714724), (26, 3143228), (44, 1857362), (52, 1571614), (88, 928681), (104, 785807), (143, 571496), (286, 285748), (572, 142874), (1144, 71437)]