20820393

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14560407

約数列:

[1, 3, 9, 11, 17, 33, 51, 89, 99, 139, 153, 187, 267, 417, 561, 801, 979, 1251, 1513, 1529, 1683, 2363, 2937, 4539, 4587, 7089, 8811, 12371, 13617, 13761, 16643, 21267, 25993, 37113, 49929, 77979, 111339, 136081, 149787, 210307, 233937, 408243, 630921, 1224729, 1892763, 2313377, 6940131, 20820393]

約数ペア:

[(1, 20820393), (3, 6940131), (9, 2313377), (11, 1892763), (17, 1224729), (33, 630921), (51, 408243), (89, 233937), (99, 210307), (139, 149787), (153, 136081), (187, 111339), (267, 77979), (417, 49929), (561, 37113), (801, 25993), (979, 21267), (1251, 16643), (1513, 13761), (1529, 13617), (1683, 12371), (2363, 8811), (2937, 7089), (4539, 4587)]