21257568

素因数分解:

$2^5\times 3^2\times {\mathrm{31}}^1\times {\mathrm{2381}}^1$

素因数の和:2428

約数の個数: 72

約数和(自身を含む): 62427456

約数和(自身を除く): 41169888

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 72, 93, 96, 124, 144, 186, 248, 279, 288, 372, 496, 558, 744, 992, 1116, 1488, 2232, 2381, 2976, 4464, 4762, 7143, 8928, 9524, 14286, 19048, 21429, 28572, 38096, 42858, 57144, 73811, 76192, 85716, 114288, 147622, 171432, 221433, 228576, 295244, 342864, 442866, 590488, 664299, 685728, 885732, 1180976, 1328598, 1771464, 2361952, 2657196, 3542928, 5314392, 7085856, 10628784, 21257568]

約数ペア:

[(1, 21257568), (2, 10628784), (3, 7085856), (4, 5314392), (6, 3542928), (8, 2657196), (9, 2361952), (12, 1771464), (16, 1328598), (18, 1180976), (24, 885732), (31, 685728), (32, 664299), (36, 590488), (48, 442866), (62, 342864), (72, 295244), (93, 228576), (96, 221433), (124, 171432), (144, 147622), (186, 114288), (248, 85716), (279, 76192), (288, 73811), (372, 57144), (496, 42858), (558, 38096), (744, 28572), (992, 21429), (1116, 19048), (1488, 14286), (2232, 9524), (2381, 8928), (2976, 7143), (4464, 4762)]