21045528

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:502

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 48074472

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 31, 36, 42, 54, 56, 62, 63, 72, 84, 93, 108, 124, 126, 168, 186, 189, 216, 217, 248, 252, 279, 372, 378, 434, 449, 504, 558, 651, 744, 756, 837, 868, 898, 1116, 1302, 1347, 1512, 1674, 1736, 1796, 1953, 2232, 2604, 2694, 3143, 3348, 3592, 3906, 4041, 5208, 5388, 5859, 6286, 6696, 7812, 8082, 9429, 10776, 11718, 12123, 12572, 13919, 15624, 16164, 18858, 23436, 24246, 25144, 27838, 28287, 32328, 37716, 41757, 46872, 48492, 55676, 56574, 75432, 83514, 84861, 96984, 97433, 111352, 113148, 125271, 167028, 169722, 194866, 226296, 250542, 292299, 334056, 339444, 375813, 389732, 501084, 584598, 678888, 751626, 779464, 876897, 1002168, 1169196, 1503252, 1753794, 2338392, 2630691, 3006504, 3507588, 5261382, 7015176, 10522764, 21045528]

約数ペア:

[(1, 21045528), (2, 10522764), (3, 7015176), (4, 5261382), (6, 3507588), (7, 3006504), (8, 2630691), (9, 2338392), (12, 1753794), (14, 1503252), (18, 1169196), (21, 1002168), (24, 876897), (27, 779464), (28, 751626), (31, 678888), (36, 584598), (42, 501084), (54, 389732), (56, 375813), (62, 339444), (63, 334056), (72, 292299), (84, 250542), (93, 226296), (108, 194866), (124, 169722), (126, 167028), (168, 125271), (186, 113148), (189, 111352), (216, 97433), (217, 96984), (248, 84861), (252, 83514), (279, 75432), (372, 56574), (378, 55676), (434, 48492), (449, 46872), (504, 41757), (558, 37716), (651, 32328), (744, 28287), (756, 27838), (837, 25144), (868, 24246), (898, 23436), (1116, 18858), (1302, 16164), (1347, 15624), (1512, 13919), (1674, 12572), (1736, 12123), (1796, 11718), (1953, 10776), (2232, 9429), (2604, 8082), (2694, 7812), (3143, 6696), (3348, 6286), (3592, 5859), (3906, 5388), (4041, 5208)]