21486578

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{569}}^1$

素因数の和:889

約数の個数: 16

約数和(自身を含む): 32832000

約数和(自身を除く): 11345422

約数列:

[1, 2, 79, 158, 239, 478, 569, 1138, 18881, 37762, 44951, 89902, 135991, 271982, 10743289, 21486578]

約数ペア:

[(1, 21486578), (2, 10743289), (79, 271982), (158, 135991), (239, 89902), (478, 44951), (569, 37762), (1138, 18881)]