18397449

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 31920768

約数和(自身を除く): 13523319

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 457, 497, 567, 639, 1371, 1491, 1917, 3199, 4113, 4473, 5751, 9597, 12339, 13419, 28791, 32447, 37017, 40257, 86373, 97341, 227129, 259119, 292023, 681387, 876069, 2044161, 2628207, 6132483, 18397449]

約数ペア:

[(1, 18397449), (3, 6132483), (7, 2628207), (9, 2044161), (21, 876069), (27, 681387), (63, 292023), (71, 259119), (81, 227129), (189, 97341), (213, 86373), (457, 40257), (497, 37017), (567, 32447), (639, 28791), (1371, 13419), (1491, 12339), (1917, 9597), (3199, 5751), (4113, 4473)]