21286436

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{79427}}^1$

素因数の和:79498

約数の個数: 12

約数和(自身を含む): 37807728

約数和(自身を除く): 16521292

約数列:

[1, 2, 4, 67, 134, 268, 79427, 158854, 317708, 5321609, 10643218, 21286436]

約数ペア:

[(1, 21286436), (2, 10643218), (4, 5321609), (67, 317708), (134, 158854), (268, 79427)]