21019824

素因数分解:

$2^4\times 3^4\times 7^2\times {\mathrm{331}}^1$

素因数の和:365

約数の個数: 150

約数和(自身を含む): 70983924

約数和(自身を除く): 49964100

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 49, 54, 56, 63, 72, 81, 84, 98, 108, 112, 126, 144, 147, 162, 168, 189, 196, 216, 252, 294, 324, 331, 336, 378, 392, 432, 441, 504, 567, 588, 648, 662, 756, 784, 882, 993, 1008, 1134, 1176, 1296, 1323, 1324, 1512, 1764, 1986, 2268, 2317, 2352, 2646, 2648, 2979, 3024, 3528, 3969, 3972, 4536, 4634, 5292, 5296, 5958, 6951, 7056, 7938, 7944, 8937, 9072, 9268, 10584, 11916, 13902, 15876, 15888, 16219, 17874, 18536, 20853, 21168, 23832, 26811, 27804, 31752, 32438, 35748, 37072, 41706, 47664, 48657, 53622, 55608, 62559, 63504, 64876, 71496, 83412, 97314, 107244, 111216, 125118, 129752, 142992, 145971, 166824, 187677, 194628, 214488, 250236, 259504, 291942, 333648, 375354, 389256, 428976, 437913, 500472, 583884, 750708, 778512, 875826, 1000944, 1167768, 1313739, 1501416, 1751652, 2335536, 2627478, 3002832, 3503304, 5254956, 7006608, 10509912, 21019824]

約数ペア:

[(1, 21019824), (2, 10509912), (3, 7006608), (4, 5254956), (6, 3503304), (7, 3002832), (8, 2627478), (9, 2335536), (12, 1751652), (14, 1501416), (16, 1313739), (18, 1167768), (21, 1000944), (24, 875826), (27, 778512), (28, 750708), (36, 583884), (42, 500472), (48, 437913), (49, 428976), (54, 389256), (56, 375354), (63, 333648), (72, 291942), (81, 259504), (84, 250236), (98, 214488), (108, 194628), (112, 187677), (126, 166824), (144, 145971), (147, 142992), (162, 129752), (168, 125118), (189, 111216), (196, 107244), (216, 97314), (252, 83412), (294, 71496), (324, 64876), (331, 63504), (336, 62559), (378, 55608), (392, 53622), (432, 48657), (441, 47664), (504, 41706), (567, 37072), (588, 35748), (648, 32438), (662, 31752), (756, 27804), (784, 26811), (882, 23832), (993, 21168), (1008, 20853), (1134, 18536), (1176, 17874), (1296, 16219), (1323, 15888), (1324, 15876), (1512, 13902), (1764, 11916), (1986, 10584), (2268, 9268), (2317, 9072), (2352, 8937), (2646, 7944), (2648, 7938), (2979, 7056), (3024, 6951), (3528, 5958), (3969, 5296), (3972, 5292), (4536, 4634)]