20161986

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{258487}}^1$

素因数の和:258505

約数の個数: 16

約数和(自身を含む): 43425984

約数和(自身を除く): 23263998

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 258487, 516974, 775461, 1550922, 3360331, 6720662, 10080993, 20161986]

約数ペア:

[(1, 20161986), (2, 10080993), (3, 6720662), (6, 3360331), (13, 1550922), (26, 775461), (39, 516974), (78, 258487)]