81617920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{19}}^1\times {\mathrm{839}}^1$

素因数の和:883

約数の個数: 88

約数和(自身を含む): 206337600

約数和(自身を除く): 124719680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 512, 608, 640, 760, 839, 1024, 1216, 1280, 1520, 1678, 2432, 2560, 3040, 3356, 4195, 4864, 5120, 6080, 6712, 8390, 9728, 12160, 13424, 15941, 16780, 19456, 24320, 26848, 31882, 33560, 48640, 53696, 63764, 67120, 79705, 97280, 107392, 127528, 134240, 159410, 214784, 255056, 268480, 318820, 429568, 510112, 536960, 637640, 859136, 1020224, 1073920, 1275280, 2040448, 2147840, 2550560, 4080896, 4295680, 5101120, 8161792, 10202240, 16323584, 20404480, 40808960, 81617920]

約数ペア:

[(1, 81617920), (2, 40808960), (4, 20404480), (5, 16323584), (8, 10202240), (10, 8161792), (16, 5101120), (19, 4295680), (20, 4080896), (32, 2550560), (38, 2147840), (40, 2040448), (64, 1275280), (76, 1073920), (80, 1020224), (95, 859136), (128, 637640), (152, 536960), (160, 510112), (190, 429568), (256, 318820), (304, 268480), (320, 255056), (380, 214784), (512, 159410), (608, 134240), (640, 127528), (760, 107392), (839, 97280), (1024, 79705), (1216, 67120), (1280, 63764), (1520, 53696), (1678, 48640), (2432, 33560), (2560, 31882), (3040, 26848), (3356, 24320), (4195, 19456), (4864, 16780), (5120, 15941), (6080, 13424), (6712, 12160), (8390, 9728)]