28080216

素因数分解:

$2^3\times 3^3\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1917

約数の個数: 64

約数和(自身を含む): 79142400

約数和(自身を除く): 51062184

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 71, 72, 108, 142, 213, 216, 284, 426, 568, 639, 852, 1278, 1704, 1831, 1917, 2556, 3662, 3834, 5112, 5493, 7324, 7668, 10986, 14648, 15336, 16479, 21972, 32958, 43944, 49437, 65916, 98874, 130001, 131832, 197748, 260002, 390003, 395496, 520004, 780006, 1040008, 1170009, 1560012, 2340018, 3120024, 3510027, 4680036, 7020054, 9360072, 14040108, 28080216]

約数ペア:

[(1, 28080216), (2, 14040108), (3, 9360072), (4, 7020054), (6, 4680036), (8, 3510027), (9, 3120024), (12, 2340018), (18, 1560012), (24, 1170009), (27, 1040008), (36, 780006), (54, 520004), (71, 395496), (72, 390003), (108, 260002), (142, 197748), (213, 131832), (216, 130001), (284, 98874), (426, 65916), (568, 49437), (639, 43944), (852, 32958), (1278, 21972), (1704, 16479), (1831, 15336), (1917, 14648), (2556, 10986), (3662, 7668), (3834, 7324), (5112, 5493)]