18388377

素因数分解:

$3^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 60

約数和(自身を含む): 33022836

約数和(自身を除く): 14634459

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 81, 113, 123, 147, 189, 287, 339, 369, 441, 567, 791, 861, 1017, 1107, 1323, 2009, 2373, 2583, 3051, 3321, 3969, 4633, 5537, 6027, 7119, 7749, 9153, 13899, 16611, 18081, 21357, 23247, 32431, 41697, 49833, 54243, 64071, 97293, 125091, 149499, 162729, 227017, 291879, 375273, 448497, 681051, 875637, 2043153, 2626911, 6129459, 18388377]

約数ペア:

[(1, 18388377), (3, 6129459), (7, 2626911), (9, 2043153), (21, 875637), (27, 681051), (41, 448497), (49, 375273), (63, 291879), (81, 227017), (113, 162729), (123, 149499), (147, 125091), (189, 97293), (287, 64071), (339, 54243), (369, 49833), (441, 41697), (567, 32431), (791, 23247), (861, 21357), (1017, 18081), (1107, 16611), (1323, 13899), (2009, 9153), (2373, 7749), (2583, 7119), (3051, 6027), (3321, 5537), (3969, 4633)]