21018436

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{78427}}^1$

素因数の和:78498

約数の個数: 12

約数和(自身を含む): 37331728

約数和(自身を除く): 16313292

約数列:

[1, 2, 4, 67, 134, 268, 78427, 156854, 313708, 5254609, 10509218, 21018436]

約数ペア:

[(1, 21018436), (2, 10509218), (4, 5254609), (67, 313708), (134, 156854), (268, 78427)]