20451408

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 56889216

約数和(自身を除く): 36437808

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 71, 102, 136, 142, 204, 213, 272, 284, 353, 408, 426, 568, 706, 816, 852, 1059, 1136, 1207, 1412, 1704, 2118, 2414, 2824, 3408, 3621, 4236, 4828, 5648, 6001, 7242, 8472, 9656, 12002, 14484, 16944, 18003, 19312, 24004, 25063, 28968, 36006, 48008, 50126, 57936, 72012, 75189, 96016, 100252, 144024, 150378, 200504, 288048, 300756, 401008, 426071, 601512, 852142, 1203024, 1278213, 1704284, 2556426, 3408568, 5112852, 6817136, 10225704, 20451408]

約数ペア:

[(1, 20451408), (2, 10225704), (3, 6817136), (4, 5112852), (6, 3408568), (8, 2556426), (12, 1704284), (16, 1278213), (17, 1203024), (24, 852142), (34, 601512), (48, 426071), (51, 401008), (68, 300756), (71, 288048), (102, 200504), (136, 150378), (142, 144024), (204, 100252), (213, 96016), (272, 75189), (284, 72012), (353, 57936), (408, 50126), (426, 48008), (568, 36006), (706, 28968), (816, 25063), (852, 24004), (1059, 19312), (1136, 18003), (1207, 16944), (1412, 14484), (1704, 12002), (2118, 9656), (2414, 8472), (2824, 7242), (3408, 6001), (3621, 5648), (4236, 4828)]