28155760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4957}}^1$

素因数の和:5041

約数の個数: 40

約数和(自身を含む): 66397536

約数和(自身を除く): 38241776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4957, 5680, 9914, 19828, 24785, 39656, 49570, 79312, 99140, 198280, 351947, 396560, 703894, 1407788, 1759735, 2815576, 3519470, 5631152, 7038940, 14077880, 28155760]

約数ペア:

[(1, 28155760), (2, 14077880), (4, 7038940), (5, 5631152), (8, 3519470), (10, 2815576), (16, 1759735), (20, 1407788), (40, 703894), (71, 396560), (80, 351947), (142, 198280), (284, 99140), (355, 79312), (568, 49570), (710, 39656), (1136, 24785), (1420, 19828), (2840, 9914), (4957, 5680)]