21279888

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:282

約数の個数: 160

約数和(自身を含む): 72376320

約数和(自身を除く): 51096432

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 31, 36, 42, 48, 54, 56, 62, 63, 72, 84, 93, 108, 112, 124, 126, 144, 168, 186, 189, 216, 217, 227, 248, 252, 279, 336, 372, 378, 432, 434, 454, 496, 504, 558, 651, 681, 744, 756, 837, 868, 908, 1008, 1116, 1302, 1362, 1488, 1512, 1589, 1674, 1736, 1816, 1953, 2043, 2232, 2604, 2724, 3024, 3178, 3348, 3472, 3632, 3906, 4086, 4464, 4767, 5208, 5448, 5859, 6129, 6356, 6696, 7037, 7812, 8172, 9534, 10416, 10896, 11718, 12258, 12712, 13392, 14074, 14301, 15624, 16344, 19068, 21111, 23436, 24516, 25424, 28148, 28602, 31248, 32688, 38136, 42222, 42903, 46872, 49032, 49259, 56296, 57204, 63333, 76272, 84444, 85806, 93744, 98064, 98518, 112592, 114408, 126666, 147777, 168888, 171612, 189999, 197036, 228816, 253332, 295554, 337776, 343224, 379998, 394072, 443331, 506664, 591108, 686448, 759996, 788144, 886662, 1013328, 1182216, 1329993, 1519992, 1773324, 2364432, 2659986, 3039984, 3546648, 5319972, 7093296, 10639944, 21279888]

約数ペア:

[(1, 21279888), (2, 10639944), (3, 7093296), (4, 5319972), (6, 3546648), (7, 3039984), (8, 2659986), (9, 2364432), (12, 1773324), (14, 1519992), (16, 1329993), (18, 1182216), (21, 1013328), (24, 886662), (27, 788144), (28, 759996), (31, 686448), (36, 591108), (42, 506664), (48, 443331), (54, 394072), (56, 379998), (62, 343224), (63, 337776), (72, 295554), (84, 253332), (93, 228816), (108, 197036), (112, 189999), (124, 171612), (126, 168888), (144, 147777), (168, 126666), (186, 114408), (189, 112592), (216, 98518), (217, 98064), (227, 93744), (248, 85806), (252, 84444), (279, 76272), (336, 63333), (372, 57204), (378, 56296), (432, 49259), (434, 49032), (454, 46872), (496, 42903), (504, 42222), (558, 38136), (651, 32688), (681, 31248), (744, 28602), (756, 28148), (837, 25424), (868, 24516), (908, 23436), (1008, 21111), (1116, 19068), (1302, 16344), (1362, 15624), (1488, 14301), (1512, 14074), (1589, 13392), (1674, 12712), (1736, 12258), (1816, 11718), (1953, 10896), (2043, 10416), (2232, 9534), (2604, 8172), (2724, 7812), (3024, 7037), (3178, 6696), (3348, 6356), (3472, 6129), (3632, 5859), (3906, 5448), (4086, 5208), (4464, 4767)]