278489289

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{1613}}^1$

素因数の和:1881

約数の個数: 32

約数和(自身を含む): 422997120

約数和(自身を除く): 144507831

約数列:

[1, 3, 13, 19, 39, 57, 233, 247, 699, 741, 1613, 3029, 4427, 4839, 9087, 13281, 20969, 30647, 57551, 62907, 91941, 172653, 375829, 398411, 1127487, 1195233, 4885777, 7140751, 14657331, 21422253, 92829763, 278489289]

約数ペア:

[(1, 278489289), (3, 92829763), (13, 21422253), (19, 14657331), (39, 7140751), (57, 4885777), (233, 1195233), (247, 1127487), (699, 398411), (741, 375829), (1613, 172653), (3029, 91941), (4427, 62907), (4839, 57551), (9087, 30647), (13281, 20969)]