205978600

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^2\times {\mathrm{557}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 491176710

約数和(自身を除く): 285198110

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 557, 860, 1075, 1114, 1720, 1849, 2150, 2228, 2785, 3698, 4300, 4456, 5570, 7396, 8600, 9245, 11140, 13925, 14792, 18490, 22280, 23951, 27850, 36980, 46225, 47902, 55700, 73960, 92450, 95804, 111400, 119755, 184900, 191608, 239510, 369800, 479020, 598775, 958040, 1029893, 1197550, 2059786, 2395100, 4119572, 4790200, 5149465, 8239144, 10298930, 20597860, 25747325, 41195720, 51494650, 102989300, 205978600]

約数ペア:

[(1, 205978600), (2, 102989300), (4, 51494650), (5, 41195720), (8, 25747325), (10, 20597860), (20, 10298930), (25, 8239144), (40, 5149465), (43, 4790200), (50, 4119572), (86, 2395100), (100, 2059786), (172, 1197550), (200, 1029893), (215, 958040), (344, 598775), (430, 479020), (557, 369800), (860, 239510), (1075, 191608), (1114, 184900), (1720, 119755), (1849, 111400), (2150, 95804), (2228, 92450), (2785, 73960), (3698, 55700), (4300, 47902), (4456, 46225), (5570, 36980), (7396, 27850), (8600, 23951), (9245, 22280), (11140, 18490), (13925, 14792)]