28367320

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 66355200

約数和(自身を除く): 37987880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 79, 94, 158, 188, 191, 235, 316, 376, 382, 395, 470, 632, 764, 790, 940, 955, 1528, 1580, 1880, 1910, 3160, 3713, 3820, 7426, 7640, 8977, 14852, 15089, 17954, 18565, 29704, 30178, 35908, 37130, 44885, 60356, 71816, 74260, 75445, 89770, 120712, 148520, 150890, 179540, 301780, 359080, 603560, 709183, 1418366, 2836732, 3545915, 5673464, 7091830, 14183660, 28367320]

約数ペア:

[(1, 28367320), (2, 14183660), (4, 7091830), (5, 5673464), (8, 3545915), (10, 2836732), (20, 1418366), (40, 709183), (47, 603560), (79, 359080), (94, 301780), (158, 179540), (188, 150890), (191, 148520), (235, 120712), (316, 89770), (376, 75445), (382, 74260), (395, 71816), (470, 60356), (632, 44885), (764, 37130), (790, 35908), (940, 30178), (955, 29704), (1528, 18565), (1580, 17954), (1880, 15089), (1910, 14852), (3160, 8977), (3713, 7640), (3820, 7426)]