18888831

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{293}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 32104800

約数和(自身を除く): 13215969

約数列:

[1, 3, 9, 13, 19, 29, 39, 57, 87, 117, 171, 247, 261, 293, 377, 551, 741, 879, 1131, 1653, 2223, 2637, 3393, 3809, 4959, 5567, 7163, 8497, 11427, 16701, 21489, 25491, 34281, 50103, 64467, 72371, 76473, 110461, 161443, 217113, 331383, 484329, 651339, 994149, 1452987, 2098759, 6296277, 18888831]

約数ペア:

[(1, 18888831), (3, 6296277), (9, 2098759), (13, 1452987), (19, 994149), (29, 651339), (39, 484329), (57, 331383), (87, 217113), (117, 161443), (171, 110461), (247, 76473), (261, 72371), (293, 64467), (377, 50103), (551, 34281), (741, 25491), (879, 21489), (1131, 16701), (1653, 11427), (2223, 8497), (2637, 7163), (3393, 5567), (3809, 4959)]