21130071

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 31299840

約数和(自身を除く): 10169769

約数列:

[1, 3, 19, 37, 43, 57, 111, 129, 233, 699, 703, 817, 1591, 2109, 2451, 4427, 4773, 8621, 10019, 13281, 25863, 30057, 30229, 90687, 163799, 190361, 370703, 491397, 571083, 1112109, 7043357, 21130071]

約数ペア:

[(1, 21130071), (3, 7043357), (19, 1112109), (37, 571083), (43, 491397), (57, 370703), (111, 190361), (129, 163799), (233, 90687), (699, 30229), (703, 30057), (817, 25863), (1591, 13281), (2109, 10019), (2451, 8621), (4427, 4773)]