20740160

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 112

約数和(自身を含む): 57936384

約数和(自身を除く): 37196224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 70, 80, 94, 112, 140, 160, 188, 197, 224, 235, 280, 320, 329, 376, 394, 448, 470, 560, 658, 752, 788, 940, 985, 1120, 1316, 1379, 1504, 1576, 1645, 1880, 1970, 2240, 2632, 2758, 3008, 3152, 3290, 3760, 3940, 5264, 5516, 6304, 6580, 6895, 7520, 7880, 9259, 10528, 11032, 12608, 13160, 13790, 15040, 15760, 18518, 21056, 22064, 26320, 27580, 31520, 37036, 44128, 46295, 52640, 55160, 63040, 64813, 74072, 88256, 92590, 105280, 110320, 129626, 148144, 185180, 220640, 259252, 296288, 324065, 370360, 441280, 518504, 592576, 648130, 740720, 1037008, 1296260, 1481440, 2074016, 2592520, 2962880, 4148032, 5185040, 10370080, 20740160]

約数ペア:

[(1, 20740160), (2, 10370080), (4, 5185040), (5, 4148032), (7, 2962880), (8, 2592520), (10, 2074016), (14, 1481440), (16, 1296260), (20, 1037008), (28, 740720), (32, 648130), (35, 592576), (40, 518504), (47, 441280), (56, 370360), (64, 324065), (70, 296288), (80, 259252), (94, 220640), (112, 185180), (140, 148144), (160, 129626), (188, 110320), (197, 105280), (224, 92590), (235, 88256), (280, 74072), (320, 64813), (329, 63040), (376, 55160), (394, 52640), (448, 46295), (470, 44128), (560, 37036), (658, 31520), (752, 27580), (788, 26320), (940, 22064), (985, 21056), (1120, 18518), (1316, 15760), (1379, 15040), (1504, 13790), (1576, 13160), (1645, 12608), (1880, 11032), (1970, 10528), (2240, 9259), (2632, 7880), (2758, 7520), (3008, 6895), (3152, 6580), (3290, 6304), (3760, 5516), (3940, 5264)]