265804520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{390889}}^1$

素因数の和:390917

約数の個数: 32

約数和(自身を含む): 633241800

約数和(自身を除く): 367437280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 390889, 781778, 1563556, 1954445, 3127112, 3908890, 6645113, 7817780, 13290226, 15635560, 26580452, 33225565, 53160904, 66451130, 132902260, 265804520]

約数ペア:

[(1, 265804520), (2, 132902260), (4, 66451130), (5, 53160904), (8, 33225565), (10, 26580452), (17, 15635560), (20, 13290226), (34, 7817780), (40, 6645113), (68, 3908890), (85, 3127112), (136, 1954445), (170, 1563556), (340, 781778), (680, 390889)]