18543993

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 27885312

約数和(自身を除く): 9341319

約数列:

[1, 3, 13, 37, 39, 71, 111, 181, 213, 481, 543, 923, 1443, 2353, 2627, 2769, 6697, 7059, 7881, 12851, 20091, 34151, 38553, 87061, 102453, 167063, 261183, 475487, 501189, 1426461, 6181331, 18543993]

約数ペア:

[(1, 18543993), (3, 6181331), (13, 1426461), (37, 501189), (39, 475487), (71, 261183), (111, 167063), (181, 102453), (213, 87061), (481, 38553), (543, 34151), (923, 20091), (1443, 12851), (2353, 7881), (2627, 7059), (2769, 6697)]