21622720

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{197}}^1$

素因数の和:235

約数の個数: 112

約数和(自身を含む): 60350400

約数和(自身を除く): 38727680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 197, 224, 245, 280, 320, 343, 392, 394, 448, 490, 560, 686, 784, 788, 980, 985, 1120, 1372, 1379, 1568, 1576, 1715, 1960, 1970, 2240, 2744, 2758, 3136, 3152, 3430, 3920, 3940, 5488, 5516, 6304, 6860, 6895, 7840, 7880, 9653, 10976, 11032, 12608, 13720, 13790, 15680, 15760, 19306, 21952, 22064, 27440, 27580, 31520, 38612, 44128, 48265, 54880, 55160, 63040, 67571, 77224, 88256, 96530, 109760, 110320, 135142, 154448, 193060, 220640, 270284, 308896, 337855, 386120, 441280, 540568, 617792, 675710, 772240, 1081136, 1351420, 1544480, 2162272, 2702840, 3088960, 4324544, 5405680, 10811360, 21622720]

約数ペア:

[(1, 21622720), (2, 10811360), (4, 5405680), (5, 4324544), (7, 3088960), (8, 2702840), (10, 2162272), (14, 1544480), (16, 1351420), (20, 1081136), (28, 772240), (32, 675710), (35, 617792), (40, 540568), (49, 441280), (56, 386120), (64, 337855), (70, 308896), (80, 270284), (98, 220640), (112, 193060), (140, 154448), (160, 135142), (196, 110320), (197, 109760), (224, 96530), (245, 88256), (280, 77224), (320, 67571), (343, 63040), (392, 55160), (394, 54880), (448, 48265), (490, 44128), (560, 38612), (686, 31520), (784, 27580), (788, 27440), (980, 22064), (985, 21952), (1120, 19306), (1372, 15760), (1379, 15680), (1568, 13790), (1576, 13720), (1715, 12608), (1960, 11032), (1970, 10976), (2240, 9653), (2744, 7880), (2758, 7840), (3136, 6895), (3152, 6860), (3430, 6304), (3920, 5516), (3940, 5488)]