81528800

素因数分解:

$2^5\times 5^2\times {\mathrm{223}}^1\times {\mathrm{457}}^1$

素因数の和:700

約数の個数: 72

約数和(自身を含む): 200362176

約数和(自身を除く): 118833376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 223, 400, 446, 457, 800, 892, 914, 1115, 1784, 1828, 2230, 2285, 3568, 3656, 4460, 4570, 5575, 7136, 7312, 8920, 9140, 11150, 11425, 14624, 17840, 18280, 22300, 22850, 35680, 36560, 44600, 45700, 73120, 89200, 91400, 101911, 178400, 182800, 203822, 365600, 407644, 509555, 815288, 1019110, 1630576, 2038220, 2547775, 3261152, 4076440, 5095550, 8152880, 10191100, 16305760, 20382200, 40764400, 81528800]

約数ペア:

[(1, 81528800), (2, 40764400), (4, 20382200), (5, 16305760), (8, 10191100), (10, 8152880), (16, 5095550), (20, 4076440), (25, 3261152), (32, 2547775), (40, 2038220), (50, 1630576), (80, 1019110), (100, 815288), (160, 509555), (200, 407644), (223, 365600), (400, 203822), (446, 182800), (457, 178400), (800, 101911), (892, 91400), (914, 89200), (1115, 73120), (1784, 45700), (1828, 44600), (2230, 36560), (2285, 35680), (3568, 22850), (3656, 22300), (4460, 18280), (4570, 17840), (5575, 14624), (7136, 11425), (7312, 11150), (8920, 9140)]