18909902

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{2381}}^1$

素因数の和:2432

約数の個数: 24

約数和(自身を含む): 32671512

約数和(自身を除く): 13761610

約数列:

[1, 2, 11, 19, 22, 38, 209, 361, 418, 722, 2381, 3971, 4762, 7942, 26191, 45239, 52382, 90478, 497629, 859541, 995258, 1719082, 9454951, 18909902]

約数ペア:

[(1, 18909902), (2, 9454951), (11, 1719082), (19, 995258), (22, 859541), (38, 497629), (209, 90478), (361, 52382), (418, 45239), (722, 26191), (2381, 7942), (3971, 4762)]