279257080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{1669}}^1$

素因数の和:1816

約数の個数: 64

約数和(自身を含む): 649296000

約数和(自身を除く): 370038920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 89, 94, 178, 188, 235, 356, 376, 445, 470, 712, 890, 940, 1669, 1780, 1880, 3338, 3560, 4183, 6676, 8345, 8366, 13352, 16690, 16732, 20915, 33380, 33464, 41830, 66760, 78443, 83660, 148541, 156886, 167320, 297082, 313772, 392215, 594164, 627544, 742705, 784430, 1188328, 1485410, 1568860, 2970820, 3137720, 5941640, 6981427, 13962854, 27925708, 34907135, 55851416, 69814270, 139628540, 279257080]

約数ペア:

[(1, 279257080), (2, 139628540), (4, 69814270), (5, 55851416), (8, 34907135), (10, 27925708), (20, 13962854), (40, 6981427), (47, 5941640), (89, 3137720), (94, 2970820), (178, 1568860), (188, 1485410), (235, 1188328), (356, 784430), (376, 742705), (445, 627544), (470, 594164), (712, 392215), (890, 313772), (940, 297082), (1669, 167320), (1780, 156886), (1880, 148541), (3338, 83660), (3560, 78443), (4183, 66760), (6676, 41830), (8345, 33464), (8366, 33380), (13352, 20915), (16690, 16732)]