18731362

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 12597278

約数列:

[1, 2, 13, 26, 71, 73, 139, 142, 146, 278, 923, 949, 1807, 1846, 1898, 3614, 5183, 9869, 10147, 10366, 19738, 20294, 67379, 128297, 131911, 134758, 256594, 263822, 720437, 1440874, 9365681, 18731362]

約数ペア:

[(1, 18731362), (2, 9365681), (13, 1440874), (26, 720437), (71, 263822), (73, 256594), (139, 134758), (142, 131911), (146, 128297), (278, 67379), (923, 20294), (949, 19738), (1807, 10366), (1846, 10147), (1898, 9869), (3614, 5183)]