21548830

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{27277}}^1$

素因数の和:27363

約数の個数: 16

約数和(自身を含む): 39280320

約数和(自身を除く): 17731490

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 27277, 54554, 136385, 272770, 2154883, 4309766, 10774415, 21548830]

約数ペア:

[(1, 21548830), (2, 10774415), (5, 4309766), (10, 2154883), (79, 272770), (158, 136385), (395, 54554), (790, 27277)]