21217392

素因数分解:

$2^4\times 3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 180

約数和(自身を含む): 72037056

約数和(自身を除く): 50819664

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 31, 36, 42, 48, 49, 56, 62, 63, 72, 84, 93, 97, 98, 112, 124, 126, 144, 147, 168, 186, 194, 196, 217, 248, 252, 279, 291, 294, 336, 372, 388, 392, 434, 441, 496, 504, 558, 582, 588, 651, 679, 744, 776, 784, 868, 873, 882, 1008, 1116, 1164, 1176, 1302, 1358, 1488, 1519, 1552, 1736, 1746, 1764, 1953, 2037, 2232, 2328, 2352, 2604, 2716, 3007, 3038, 3472, 3492, 3528, 3906, 4074, 4464, 4557, 4656, 4753, 5208, 5432, 6014, 6076, 6111, 6984, 7056, 7812, 8148, 9021, 9114, 9506, 10416, 10864, 12028, 12152, 12222, 13671, 13968, 14259, 15624, 16296, 18042, 18228, 19012, 21049, 24056, 24304, 24444, 27063, 27342, 28518, 31248, 32592, 36084, 36456, 38024, 42098, 42777, 48112, 48888, 54126, 54684, 57036, 63147, 72168, 72912, 76048, 84196, 85554, 97776, 108252, 109368, 114072, 126294, 144336, 147343, 168392, 171108, 189441, 216504, 218736, 228144, 252588, 294686, 336784, 342216, 378882, 433008, 442029, 505176, 589372, 684432, 757764, 884058, 1010352, 1178744, 1326087, 1515528, 1768116, 2357488, 2652174, 3031056, 3536232, 5304348, 7072464, 10608696, 21217392]

約数ペア:

[(1, 21217392), (2, 10608696), (3, 7072464), (4, 5304348), (6, 3536232), (7, 3031056), (8, 2652174), (9, 2357488), (12, 1768116), (14, 1515528), (16, 1326087), (18, 1178744), (21, 1010352), (24, 884058), (28, 757764), (31, 684432), (36, 589372), (42, 505176), (48, 442029), (49, 433008), (56, 378882), (62, 342216), (63, 336784), (72, 294686), (84, 252588), (93, 228144), (97, 218736), (98, 216504), (112, 189441), (124, 171108), (126, 168392), (144, 147343), (147, 144336), (168, 126294), (186, 114072), (194, 109368), (196, 108252), (217, 97776), (248, 85554), (252, 84196), (279, 76048), (291, 72912), (294, 72168), (336, 63147), (372, 57036), (388, 54684), (392, 54126), (434, 48888), (441, 48112), (496, 42777), (504, 42098), (558, 38024), (582, 36456), (588, 36084), (651, 32592), (679, 31248), (744, 28518), (776, 27342), (784, 27063), (868, 24444), (873, 24304), (882, 24056), (1008, 21049), (1116, 19012), (1164, 18228), (1176, 18042), (1302, 16296), (1358, 15624), (1488, 14259), (1519, 13968), (1552, 13671), (1736, 12222), (1746, 12152), (1764, 12028), (1953, 10864), (2037, 10416), (2232, 9506), (2328, 9114), (2352, 9021), (2604, 8148), (2716, 7812), (3007, 7056), (3038, 6984), (3472, 6111), (3492, 6076), (3528, 6014), (3906, 5432), (4074, 5208), (4464, 4753), (4557, 4656)]