19866861

素因数分解:

$3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3251}}^1$

素因数の和:3361

約数の個数: 24

約数和(自身を含む): 33144384

約数和(自身を除く): 13277523

約数列:

[1, 3, 7, 9, 21, 63, 97, 291, 679, 873, 2037, 3251, 6111, 9753, 22757, 29259, 68271, 204813, 315347, 946041, 2207429, 2838123, 6622287, 19866861]

約数ペア:

[(1, 19866861), (3, 6622287), (7, 2838123), (9, 2207429), (21, 946041), (63, 315347), (97, 204813), (291, 68271), (679, 29259), (873, 22757), (2037, 9753), (3251, 6111)]