18209997

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 30296448

約数和(自身を除く): 12086451

約数列:

[1, 3, 9, 13, 23, 39, 67, 69, 101, 117, 201, 207, 299, 303, 603, 871, 897, 909, 1313, 1541, 2323, 2613, 2691, 3939, 4623, 6767, 6969, 7839, 11817, 13869, 20033, 20301, 20907, 30199, 60099, 60903, 87971, 90597, 155641, 180297, 263913, 271791, 466923, 791739, 1400769, 2023333, 6069999, 18209997]

約数ペア:

[(1, 18209997), (3, 6069999), (9, 2023333), (13, 1400769), (23, 791739), (39, 466923), (67, 271791), (69, 263913), (101, 180297), (117, 155641), (201, 90597), (207, 87971), (299, 60903), (303, 60099), (603, 30199), (871, 20907), (897, 20301), (909, 20033), (1313, 13869), (1541, 11817), (2323, 7839), (2613, 6969), (2691, 6767), (3939, 4623)]