81861948

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:557

約数の個数: 144

約数和(自身を含む): 255360000

約数和(自身を除く): 173498052

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 31, 36, 42, 49, 54, 62, 63, 84, 93, 98, 108, 124, 126, 147, 186, 189, 196, 217, 252, 279, 294, 372, 378, 434, 441, 499, 558, 588, 651, 756, 837, 868, 882, 998, 1116, 1302, 1323, 1497, 1519, 1674, 1764, 1953, 1996, 2604, 2646, 2994, 3038, 3348, 3493, 3906, 4491, 4557, 5292, 5859, 5988, 6076, 6986, 7812, 8982, 9114, 10479, 11718, 13473, 13671, 13972, 15469, 17964, 18228, 20958, 23436, 24451, 26946, 27342, 30938, 31437, 41013, 41916, 46407, 48902, 53892, 54684, 61876, 62874, 73353, 82026, 92814, 94311, 97804, 108283, 125748, 139221, 146706, 164052, 185628, 188622, 216566, 220059, 278442, 293412, 324849, 377244, 417663, 433132, 440118, 556884, 649698, 660177, 757981, 835326, 880236, 974547, 1299396, 1320354, 1515962, 1670652, 1949094, 2273943, 2640708, 2923641, 3031924, 3898188, 4547886, 5847282, 6821829, 9095772, 11694564, 13643658, 20465487, 27287316, 40930974, 81861948]

約数ペア:

[(1, 81861948), (2, 40930974), (3, 27287316), (4, 20465487), (6, 13643658), (7, 11694564), (9, 9095772), (12, 6821829), (14, 5847282), (18, 4547886), (21, 3898188), (27, 3031924), (28, 2923641), (31, 2640708), (36, 2273943), (42, 1949094), (49, 1670652), (54, 1515962), (62, 1320354), (63, 1299396), (84, 974547), (93, 880236), (98, 835326), (108, 757981), (124, 660177), (126, 649698), (147, 556884), (186, 440118), (189, 433132), (196, 417663), (217, 377244), (252, 324849), (279, 293412), (294, 278442), (372, 220059), (378, 216566), (434, 188622), (441, 185628), (499, 164052), (558, 146706), (588, 139221), (651, 125748), (756, 108283), (837, 97804), (868, 94311), (882, 92814), (998, 82026), (1116, 73353), (1302, 62874), (1323, 61876), (1497, 54684), (1519, 53892), (1674, 48902), (1764, 46407), (1953, 41916), (1996, 41013), (2604, 31437), (2646, 30938), (2994, 27342), (3038, 26946), (3348, 24451), (3493, 23436), (3906, 20958), (4491, 18228), (4557, 17964), (5292, 15469), (5859, 13972), (5988, 13671), (6076, 13473), (6986, 11718), (7812, 10479), (8982, 9114)]