21687039

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 34320000

約数和(自身を除く): 12632961

約数列:

[1, 3, 9, 11, 33, 99, 439, 499, 1317, 1497, 3951, 4491, 4829, 5489, 14487, 16467, 43461, 49401, 219061, 657183, 1971549, 2409671, 7229013, 21687039]

約数ペア:

[(1, 21687039), (3, 7229013), (9, 2409671), (11, 1971549), (33, 657183), (99, 219061), (439, 49401), (499, 43461), (1317, 16467), (1497, 14487), (3951, 5489), (4491, 4829)]