1978418

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1619}}^1$

素因数の和:1681

約数の個数: 16

約数和(自身を含む): 3265920

約数和(自身を除く): 1287502

約数列:

[1, 2, 13, 26, 47, 94, 611, 1222, 1619, 3238, 21047, 42094, 76093, 152186, 989209, 1978418]

約数ペア:

[(1, 1978418), (2, 989209), (13, 152186), (26, 76093), (47, 42094), (94, 21047), (611, 3238), (1222, 1619)]