21181401

素因数分解:

$3^2\times {\mathrm{31}}^3\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 24

約数和(自身を含む): 32015360

約数和(自身を除く): 10833959

約数列:

[1, 3, 9, 31, 79, 93, 237, 279, 711, 961, 2449, 2883, 7347, 8649, 22041, 29791, 75919, 89373, 227757, 268119, 683271, 2353489, 7060467, 21181401]

約数ペア:

[(1, 21181401), (3, 7060467), (9, 2353489), (31, 683271), (79, 268119), (93, 227757), (237, 89373), (279, 75919), (711, 29791), (961, 22041), (2449, 8649), (2883, 7347)]