21231558

素因数分解:

$2^1\times 3^4\times {\mathrm{131059}}^1$

素因数の和:131073

約数の個数: 20

約数和(自身を含む): 47574780

約数和(自身を除く): 26343222

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 131059, 262118, 393177, 786354, 1179531, 2359062, 3538593, 7077186, 10615779, 21231558]

約数ペア:

[(1, 21231558), (2, 10615779), (3, 7077186), (6, 3538593), (9, 2359062), (18, 1179531), (27, 786354), (54, 393177), (81, 262118), (162, 131059)]