128275984

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{112919}}^1$

素因数の和:112998

約数の個数: 20

約数和(自身を含む): 252037440

約数和(自身を除く): 123761456

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 112919, 225838, 451676, 903352, 1806704, 8017249, 16034498, 32068996, 64137992, 128275984]

約数ペア:

[(1, 128275984), (2, 64137992), (4, 32068996), (8, 16034498), (16, 8017249), (71, 1806704), (142, 903352), (284, 451676), (568, 225838), (1136, 112919)]