21067857

素因数分解:

$3^5\times {\mathrm{181}}^1\times {\mathrm{479}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 31799040

約数和(自身を除く): 10731183

約数列:

[1, 3, 9, 27, 81, 181, 243, 479, 543, 1437, 1629, 4311, 4887, 12933, 14661, 38799, 43983, 86699, 116397, 260097, 780291, 2340873, 7022619, 21067857]

約数ペア:

[(1, 21067857), (3, 7022619), (9, 2340873), (27, 780291), (81, 260097), (181, 116397), (243, 86699), (479, 43983), (543, 38799), (1437, 14661), (1629, 12933), (4311, 4887)]