138915

素因数分解:

$3^4\times 5^1\times 7^3$

素因数の和:38

約数の個数: 40

約数和(自身を含む): 290400

約数和(自身を除く): 151485

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 343, 405, 441, 567, 735, 945, 1029, 1323, 1715, 2205, 2835, 3087, 3969, 5145, 6615, 9261, 15435, 19845, 27783, 46305, 138915]

約数ペア:

[(1, 138915), (3, 46305), (5, 27783), (7, 19845), (9, 15435), (15, 9261), (21, 6615), (27, 5145), (35, 3969), (45, 3087), (49, 2835), (63, 2205), (81, 1715), (105, 1323), (135, 1029), (147, 945), (189, 735), (245, 567), (315, 441), (343, 405)]