20218365

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15493}}^1$

素因数の和:15533

約数の個数: 24

約数和(自身を含む): 36255960

約数和(自身を除く): 16037595

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15493, 46479, 77465, 139437, 232395, 449297, 697185, 1347891, 2246485, 4043673, 6739455, 20218365]

約数ペア:

[(1, 20218365), (3, 6739455), (5, 4043673), (9, 2246485), (15, 1347891), (29, 697185), (45, 449297), (87, 232395), (145, 139437), (261, 77465), (435, 46479), (1305, 15493)]