21028383

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{229}}^1$

素因数の和:436

約数の個数: 32

約数和(自身を含む): 33120000

約数和(自身を除く): 12091617

約数列:

[1, 3, 9, 19, 27, 57, 171, 179, 229, 513, 537, 687, 1611, 2061, 3401, 4351, 4833, 6183, 10203, 13053, 30609, 39159, 40991, 91827, 117477, 122973, 368919, 778829, 1106757, 2336487, 7009461, 21028383]

約数ペア:

[(1, 21028383), (3, 7009461), (9, 2336487), (19, 1106757), (27, 778829), (57, 368919), (171, 122973), (179, 117477), (229, 91827), (513, 40991), (537, 39159), (687, 30609), (1611, 13053), (2061, 10203), (3401, 6183), (4351, 4833)]