21000321

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4733}}^1$

素因数の和:4785

約数の個数: 24

約数和(自身を含む): 33232680

約数和(自身を除く): 12232359

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4733, 14199, 42597, 80461, 137257, 241383, 411771, 724149, 1235313, 2333369, 7000107, 21000321]

約数ペア:

[(1, 21000321), (3, 7000107), (9, 2333369), (17, 1235313), (29, 724149), (51, 411771), (87, 241383), (153, 137257), (261, 80461), (493, 42597), (1479, 14199), (4437, 4733)]