18909890

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{22783}}^1$

素因数の和:22873

約数の個数: 16

約数和(自身を含む): 34449408

約数和(自身を除く): 15539518

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 22783, 45566, 113915, 227830, 1890989, 3781978, 9454945, 18909890]

約数ペア:

[(1, 18909890), (2, 9454945), (5, 3781978), (10, 1890989), (83, 227830), (166, 113915), (415, 45566), (830, 22783)]