20018521

素因数分解:

${\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:276

約数の個数: 16

約数和(自身を含む): 21288960

約数和(自身を除く): 1270439

約数列:

[1, 43, 71, 79, 83, 3053, 3397, 3569, 5609, 5893, 6557, 241187, 253399, 281951, 465547, 20018521]

約数ペア:

[(1, 20018521), (43, 465547), (71, 281951), (79, 253399), (83, 241187), (3053, 6557), (3397, 5893), (3569, 5609)]