87806440

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4889}}^1$

素因数の和:5349

約数の個数: 32

約数和(自身を含む): 198045000

約数和(自身を除く): 110238560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 4889, 8980, 9778, 17960, 19556, 24445, 39112, 48890, 97780, 195560, 2195161, 4390322, 8780644, 10975805, 17561288, 21951610, 43903220, 87806440]

約数ペア:

[(1, 87806440), (2, 43903220), (4, 21951610), (5, 17561288), (8, 10975805), (10, 8780644), (20, 4390322), (40, 2195161), (449, 195560), (898, 97780), (1796, 48890), (2245, 39112), (3592, 24445), (4490, 19556), (4889, 17960), (8980, 9778)]