20520505

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:536

約数の個数: 16

約数和(自身を含む): 25147584

約数和(自身を除く): 4627079

約数列:

[1, 5, 83, 197, 251, 415, 985, 1255, 16351, 20833, 49447, 81755, 104165, 247235, 4104101, 20520505]

約数ペア:

[(1, 20520505), (5, 4104101), (83, 247235), (197, 104165), (251, 81755), (415, 49447), (985, 20833), (1255, 16351)]