21278152

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 51217920

約数和(自身を除く): 29939768

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 31, 34, 49, 56, 62, 68, 98, 103, 119, 124, 136, 196, 206, 217, 238, 248, 392, 412, 434, 476, 527, 721, 824, 833, 868, 952, 1054, 1442, 1519, 1666, 1736, 1751, 2108, 2884, 3038, 3193, 3332, 3502, 3689, 4216, 5047, 5768, 6076, 6386, 6664, 7004, 7378, 10094, 12152, 12257, 12772, 14008, 14756, 20188, 22351, 24514, 25544, 25823, 29512, 40376, 44702, 49028, 51646, 54281, 85799, 89404, 98056, 103292, 108562, 156457, 171598, 178808, 206584, 217124, 312914, 343196, 379967, 434248, 625828, 686392, 759934, 1251656, 1519868, 2659769, 3039736, 5319538, 10639076, 21278152]

約数ペア:

[(1, 21278152), (2, 10639076), (4, 5319538), (7, 3039736), (8, 2659769), (14, 1519868), (17, 1251656), (28, 759934), (31, 686392), (34, 625828), (49, 434248), (56, 379967), (62, 343196), (68, 312914), (98, 217124), (103, 206584), (119, 178808), (124, 171598), (136, 156457), (196, 108562), (206, 103292), (217, 98056), (238, 89404), (248, 85799), (392, 54281), (412, 51646), (434, 49028), (476, 44702), (527, 40376), (721, 29512), (824, 25823), (833, 25544), (868, 24514), (952, 22351), (1054, 20188), (1442, 14756), (1519, 14008), (1666, 12772), (1736, 12257), (1751, 12152), (2108, 10094), (2884, 7378), (3038, 7004), (3193, 6664), (3332, 6386), (3502, 6076), (3689, 5768), (4216, 5047)]