18493156

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2011}}^1$

素因数の和:2056

約数の個数: 36

約数和(自身を含む): 37463440

約数和(自身を除く): 18970284

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2011, 2299, 4022, 4598, 8044, 9196, 22121, 38209, 44242, 76418, 88484, 152836, 243331, 420299, 486662, 840598, 973324, 1681196, 4623289, 9246578, 18493156]

約数ペア:

[(1, 18493156), (2, 9246578), (4, 4623289), (11, 1681196), (19, 973324), (22, 840598), (38, 486662), (44, 420299), (76, 243331), (121, 152836), (209, 88484), (242, 76418), (418, 44242), (484, 38209), (836, 22121), (2011, 9196), (2299, 8044), (4022, 4598)]