18065980

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2729}}^1$

素因数の和:3069

約数の個数: 24

約数和(自身を含む): 38067120

約数和(自身を除く): 20001140

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 2729, 3310, 5458, 6620, 10916, 13645, 27290, 54580, 903299, 1806598, 3613196, 4516495, 9032990, 18065980]

約数ペア:

[(1, 18065980), (2, 9032990), (4, 4516495), (5, 3613196), (10, 1806598), (20, 903299), (331, 54580), (662, 27290), (1324, 13645), (1655, 10916), (2729, 6620), (3310, 5458)]