18994986

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{3169}}^1$

素因数の和:3220

約数の個数: 40

約数和(自身を含む): 43726980

約数和(自身を除く): 24731994

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1998, 2997, 3169, 5994, 6338, 9507, 19014, 28521, 57042, 85563, 117253, 171126, 234506, 256689, 351759, 513378, 703518, 1055277, 2110554, 3165831, 6331662, 9497493, 18994986]

約数ペア:

[(1, 18994986), (2, 9497493), (3, 6331662), (6, 3165831), (9, 2110554), (18, 1055277), (27, 703518), (37, 513378), (54, 351759), (74, 256689), (81, 234506), (111, 171126), (162, 117253), (222, 85563), (333, 57042), (666, 28521), (999, 19014), (1998, 9507), (2997, 6338), (3169, 5994)]