28155280

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{997}}^1$

素因数の和:1363

約数の個数: 40

約数和(自身を含む): 65712312

約数和(自身を除く): 37557032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 997, 1412, 1765, 1994, 2824, 3530, 3988, 4985, 5648, 7060, 7976, 9970, 14120, 15952, 19940, 28240, 39880, 79760, 351941, 703882, 1407764, 1759705, 2815528, 3519410, 5631056, 7038820, 14077640, 28155280]

約数ペア:

[(1, 28155280), (2, 14077640), (4, 7038820), (5, 5631056), (8, 3519410), (10, 2815528), (16, 1759705), (20, 1407764), (40, 703882), (80, 351941), (353, 79760), (706, 39880), (997, 28240), (1412, 19940), (1765, 15952), (1994, 14120), (2824, 9970), (3530, 7976), (3988, 7060), (4985, 5648)]