20817819

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{479}}^1$

素因数の和:935

約数の個数: 24

約数和(自身を含む): 32947200

約数和(自身を除く): 12129381

約数列:

[1, 3, 9, 11, 33, 99, 439, 479, 1317, 1437, 3951, 4311, 4829, 5269, 14487, 15807, 43461, 47421, 210281, 630843, 1892529, 2313091, 6939273, 20817819]

約数ペア:

[(1, 20817819), (3, 6939273), (9, 2313091), (11, 1892529), (33, 630843), (99, 210281), (439, 47421), (479, 43461), (1317, 15807), (1437, 14487), (3951, 5269), (4311, 4829)]