21536480

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 144

約数和(自身を含む): 61535376

約数和(自身を除く): 39998896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 67, 70, 80, 82, 98, 112, 134, 140, 160, 164, 196, 205, 224, 245, 268, 280, 287, 328, 335, 392, 410, 469, 490, 536, 560, 574, 656, 670, 784, 820, 938, 980, 1072, 1120, 1148, 1312, 1340, 1435, 1568, 1640, 1876, 1960, 2009, 2144, 2296, 2345, 2680, 2747, 2870, 3280, 3283, 3752, 3920, 4018, 4592, 4690, 5360, 5494, 5740, 6560, 6566, 7504, 7840, 8036, 9184, 9380, 10045, 10720, 10988, 11480, 13132, 13735, 15008, 16072, 16415, 18760, 19229, 20090, 21976, 22960, 26264, 27470, 32144, 32830, 37520, 38458, 40180, 43952, 45920, 52528, 54940, 64288, 65660, 75040, 76916, 80360, 87904, 96145, 105056, 109880, 131320, 134603, 153832, 160720, 192290, 219760, 262640, 269206, 307664, 321440, 384580, 439520, 525280, 538412, 615328, 673015, 769160, 1076824, 1346030, 1538320, 2153648, 2692060, 3076640, 4307296, 5384120, 10768240, 21536480]

約数ペア:

[(1, 21536480), (2, 10768240), (4, 5384120), (5, 4307296), (7, 3076640), (8, 2692060), (10, 2153648), (14, 1538320), (16, 1346030), (20, 1076824), (28, 769160), (32, 673015), (35, 615328), (40, 538412), (41, 525280), (49, 439520), (56, 384580), (67, 321440), (70, 307664), (80, 269206), (82, 262640), (98, 219760), (112, 192290), (134, 160720), (140, 153832), (160, 134603), (164, 131320), (196, 109880), (205, 105056), (224, 96145), (245, 87904), (268, 80360), (280, 76916), (287, 75040), (328, 65660), (335, 64288), (392, 54940), (410, 52528), (469, 45920), (490, 43952), (536, 40180), (560, 38458), (574, 37520), (656, 32830), (670, 32144), (784, 27470), (820, 26264), (938, 22960), (980, 21976), (1072, 20090), (1120, 19229), (1148, 18760), (1312, 16415), (1340, 16072), (1435, 15008), (1568, 13735), (1640, 13132), (1876, 11480), (1960, 10988), (2009, 10720), (2144, 10045), (2296, 9380), (2345, 9184), (2680, 8036), (2747, 7840), (2870, 7504), (3280, 6566), (3283, 6560), (3752, 5740), (3920, 5494), (4018, 5360), (4592, 4690)]