21151312

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 51385600

約数和(自身を除く): 30234288

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 73, 91, 104, 112, 146, 182, 199, 208, 292, 364, 398, 511, 584, 728, 796, 949, 1022, 1168, 1393, 1456, 1592, 1898, 2044, 2587, 2786, 3184, 3796, 4088, 5174, 5572, 6643, 7592, 8176, 10348, 11144, 13286, 14527, 15184, 18109, 20696, 22288, 26572, 29054, 36218, 41392, 53144, 58108, 72436, 101689, 106288, 116216, 144872, 188851, 203378, 232432, 289744, 377702, 406756, 755404, 813512, 1321957, 1510808, 1627024, 2643914, 3021616, 5287828, 10575656, 21151312]

約数ペア:

[(1, 21151312), (2, 10575656), (4, 5287828), (7, 3021616), (8, 2643914), (13, 1627024), (14, 1510808), (16, 1321957), (26, 813512), (28, 755404), (52, 406756), (56, 377702), (73, 289744), (91, 232432), (104, 203378), (112, 188851), (146, 144872), (182, 116216), (199, 106288), (208, 101689), (292, 72436), (364, 58108), (398, 53144), (511, 41392), (584, 36218), (728, 29054), (796, 26572), (949, 22288), (1022, 20696), (1168, 18109), (1393, 15184), (1456, 14527), (1592, 13286), (1898, 11144), (2044, 10348), (2587, 8176), (2786, 7592), (3184, 6643), (3796, 5572), (4088, 5174)]