81444160

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{353}}^1$

素因数の和:480

約数の個数: 112

約数和(自身を含む): 224430336

約数和(自身を除く): 142986176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 103, 112, 140, 160, 206, 224, 280, 320, 353, 412, 448, 515, 560, 706, 721, 824, 1030, 1120, 1412, 1442, 1648, 1765, 2060, 2240, 2471, 2824, 2884, 3296, 3530, 3605, 4120, 4942, 5648, 5768, 6592, 7060, 7210, 8240, 9884, 11296, 11536, 12355, 14120, 14420, 16480, 19768, 22592, 23072, 24710, 28240, 28840, 32960, 36359, 39536, 46144, 49420, 56480, 57680, 72718, 79072, 98840, 112960, 115360, 145436, 158144, 181795, 197680, 230720, 254513, 290872, 363590, 395360, 509026, 581744, 727180, 790720, 1018052, 1163488, 1272565, 1454360, 2036104, 2326976, 2545130, 2908720, 4072208, 5090260, 5817440, 8144416, 10180520, 11634880, 16288832, 20361040, 40722080, 81444160]

約数ペア:

[(1, 81444160), (2, 40722080), (4, 20361040), (5, 16288832), (7, 11634880), (8, 10180520), (10, 8144416), (14, 5817440), (16, 5090260), (20, 4072208), (28, 2908720), (32, 2545130), (35, 2326976), (40, 2036104), (56, 1454360), (64, 1272565), (70, 1163488), (80, 1018052), (103, 790720), (112, 727180), (140, 581744), (160, 509026), (206, 395360), (224, 363590), (280, 290872), (320, 254513), (353, 230720), (412, 197680), (448, 181795), (515, 158144), (560, 145436), (706, 115360), (721, 112960), (824, 98840), (1030, 79072), (1120, 72718), (1412, 57680), (1442, 56480), (1648, 49420), (1765, 46144), (2060, 39536), (2240, 36359), (2471, 32960), (2824, 28840), (2884, 28240), (3296, 24710), (3530, 23072), (3605, 22592), (4120, 19768), (4942, 16480), (5648, 14420), (5768, 14120), (6592, 12355), (7060, 11536), (7210, 11296), (8240, 9884)]