257256

素因数分解:

$2^3\times 3^4\times {\mathrm{397}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 722370

約数和(自身を除く): 465114

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 397, 648, 794, 1191, 1588, 2382, 3176, 3573, 4764, 7146, 9528, 10719, 14292, 21438, 28584, 32157, 42876, 64314, 85752, 128628, 257256]

約数ペア:

[(1, 257256), (2, 128628), (3, 85752), (4, 64314), (6, 42876), (8, 32157), (9, 28584), (12, 21438), (18, 14292), (24, 10719), (27, 9528), (36, 7146), (54, 4764), (72, 3573), (81, 3176), (108, 2382), (162, 1588), (216, 1191), (324, 794), (397, 648)]