19900495

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{607}}^1$

素因数の和:774

約数の個数: 16

約数和(自身を含む): 24514560

約数和(自身を除く): 4614065

約数列:

[1, 5, 79, 83, 395, 415, 607, 3035, 6557, 32785, 47953, 50381, 239765, 251905, 3980099, 19900495]

約数ペア:

[(1, 19900495), (5, 3980099), (79, 251905), (83, 239765), (395, 50381), (415, 47953), (607, 32785), (3035, 6557)]