18720144

素因数分解:

$2^4\times 3^2\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1916

約数の個数: 60

約数和(自身を含む): 53157312

約数和(自身を除く): 34437168

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 71, 72, 142, 144, 213, 284, 426, 568, 639, 852, 1136, 1278, 1704, 1831, 2556, 3408, 3662, 5112, 5493, 7324, 10224, 10986, 14648, 16479, 21972, 29296, 32958, 43944, 65916, 87888, 130001, 131832, 260002, 263664, 390003, 520004, 780006, 1040008, 1170009, 1560012, 2080016, 2340018, 3120024, 4680036, 6240048, 9360072, 18720144]

約数ペア:

[(1, 18720144), (2, 9360072), (3, 6240048), (4, 4680036), (6, 3120024), (8, 2340018), (9, 2080016), (12, 1560012), (16, 1170009), (18, 1040008), (24, 780006), (36, 520004), (48, 390003), (71, 263664), (72, 260002), (142, 131832), (144, 130001), (213, 87888), (284, 65916), (426, 43944), (568, 32958), (639, 29296), (852, 21972), (1136, 16479), (1278, 14648), (1704, 10986), (1831, 10224), (2556, 7324), (3408, 5493), (3662, 5112)]