21064977

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2621}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 11657583

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2621, 2679, 7863, 8037, 23589, 49799, 123187, 149397, 369561, 448191, 1108683, 2340553, 7021659, 21064977]

約数ペア:

[(1, 21064977), (3, 7021659), (9, 2340553), (19, 1108683), (47, 448191), (57, 369561), (141, 149397), (171, 123187), (423, 49799), (893, 23589), (2621, 8037), (2679, 7863)]