66456820

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{6659}}^1$

素因数の和:7167

約数の個数: 24

約数和(自身を含む): 139860000

約数和(自身を除く): 73403180

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 6659, 9980, 13318, 26636, 33295, 66590, 133180, 3322841, 6645682, 13291364, 16614205, 33228410, 66456820]

約数ペア:

[(1, 66456820), (2, 33228410), (4, 16614205), (5, 13291364), (10, 6645682), (20, 3322841), (499, 133180), (998, 66590), (1996, 33295), (2495, 26636), (4990, 13318), (6659, 9980)]