18813993

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 28864512

約数和(自身を除く): 10050519

約数列:

[1, 3, 11, 31, 33, 53, 93, 159, 341, 347, 583, 1023, 1041, 1643, 1749, 3817, 4929, 10757, 11451, 18073, 18391, 32271, 54219, 55173, 118327, 202301, 354981, 570121, 606903, 1710363, 6271331, 18813993]

約数ペア:

[(1, 18813993), (3, 6271331), (11, 1710363), (31, 606903), (33, 570121), (53, 354981), (93, 202301), (159, 118327), (341, 55173), (347, 54219), (583, 32271), (1023, 18391), (1041, 18073), (1643, 11451), (1749, 10757), (3817, 4929)]