20915216320

素因数分解:

$2^6\times 5^1\times {\mathrm{271}}^1\times {\mathrm{433}}^1\times {\mathrm{557}}^1$

素因数の和:1278

約数の個数: 112

約数和(自身を含む): 50193537408

約数和(自身を除く): 29278321088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 271, 320, 433, 542, 557, 866, 1084, 1114, 1355, 1732, 2165, 2168, 2228, 2710, 2785, 3464, 4330, 4336, 4456, 5420, 5570, 6928, 8660, 8672, 8912, 10840, 11140, 13856, 17320, 17344, 17824, 21680, 22280, 27712, 34640, 35648, 43360, 44560, 69280, 86720, 89120, 117343, 138560, 150947, 178240, 234686, 241181, 301894, 469372, 482362, 586715, 603788, 754735, 938744, 964724, 1173430, 1205905, 1207576, 1509470, 1877488, 1929448, 2346860, 2411810, 2415152, 3018940, 3754976, 3858896, 4693720, 4823620, 4830304, 6037880, 7509952, 7717792, 9387440, 9647240, 9660608, 12075760, 15435584, 18774880, 19294480, 24151520, 37549760, 38588960, 48303040, 65360051, 77177920, 130720102, 261440204, 326800255, 522880408, 653600510, 1045760816, 1307201020, 2091521632, 2614402040, 4183043264, 5228804080, 10457608160, 20915216320]

約数ペア:

[(1, 20915216320), (2, 10457608160), (4, 5228804080), (5, 4183043264), (8, 2614402040), (10, 2091521632), (16, 1307201020), (20, 1045760816), (32, 653600510), (40, 522880408), (64, 326800255), (80, 261440204), (160, 130720102), (271, 77177920), (320, 65360051), (433, 48303040), (542, 38588960), (557, 37549760), (866, 24151520), (1084, 19294480), (1114, 18774880), (1355, 15435584), (1732, 12075760), (2165, 9660608), (2168, 9647240), (2228, 9387440), (2710, 7717792), (2785, 7509952), (3464, 6037880), (4330, 4830304), (4336, 4823620), (4456, 4693720), (5420, 3858896), (5570, 3754976), (6928, 3018940), (8660, 2415152), (8672, 2411810), (8912, 2346860), (10840, 1929448), (11140, 1877488), (13856, 1509470), (17320, 1207576), (17344, 1205905), (17824, 1173430), (21680, 964724), (22280, 938744), (27712, 754735), (34640, 603788), (35648, 586715), (43360, 482362), (44560, 469372), (69280, 301894), (86720, 241181), (89120, 234686), (117343, 178240), (138560, 150947)]