2821880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 6912000

約数和(自身を除く): 4090120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 79, 94, 95, 152, 158, 188, 190, 235, 316, 376, 380, 395, 470, 632, 760, 790, 893, 940, 1501, 1580, 1786, 1880, 3002, 3160, 3572, 3713, 4465, 6004, 7144, 7426, 7505, 8930, 12008, 14852, 15010, 17860, 18565, 29704, 30020, 35720, 37130, 60040, 70547, 74260, 141094, 148520, 282188, 352735, 564376, 705470, 1410940, 2821880]

約数ペア:

[(1, 2821880), (2, 1410940), (4, 705470), (5, 564376), (8, 352735), (10, 282188), (19, 148520), (20, 141094), (38, 74260), (40, 70547), (47, 60040), (76, 37130), (79, 35720), (94, 30020), (95, 29704), (152, 18565), (158, 17860), (188, 15010), (190, 14852), (235, 12008), (316, 8930), (376, 7505), (380, 7426), (395, 7144), (470, 6004), (632, 4465), (760, 3713), (790, 3572), (893, 3160), (940, 3002), (1501, 1880), (1580, 1786)]