20981952

素因数分解:

$2^6\times 3^2\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:590

約数の個数: 84

約数和(自身を含む): 61087000

約数和(自身を除く): 40105048

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 73, 96, 144, 146, 192, 219, 288, 292, 438, 499, 576, 584, 657, 876, 998, 1168, 1314, 1497, 1752, 1996, 2336, 2628, 2994, 3504, 3992, 4491, 4672, 5256, 5988, 7008, 7984, 8982, 10512, 11976, 14016, 15968, 17964, 21024, 23952, 31936, 35928, 36427, 42048, 47904, 71856, 72854, 95808, 109281, 143712, 145708, 218562, 287424, 291416, 327843, 437124, 582832, 655686, 874248, 1165664, 1311372, 1748496, 2331328, 2622744, 3496992, 5245488, 6993984, 10490976, 20981952]

約数ペア:

[(1, 20981952), (2, 10490976), (3, 6993984), (4, 5245488), (6, 3496992), (8, 2622744), (9, 2331328), (12, 1748496), (16, 1311372), (18, 1165664), (24, 874248), (32, 655686), (36, 582832), (48, 437124), (64, 327843), (72, 291416), (73, 287424), (96, 218562), (144, 145708), (146, 143712), (192, 109281), (219, 95808), (288, 72854), (292, 71856), (438, 47904), (499, 42048), (576, 36427), (584, 35928), (657, 31936), (876, 23952), (998, 21024), (1168, 17964), (1314, 15968), (1497, 14016), (1752, 11976), (1996, 10512), (2336, 8982), (2628, 7984), (2994, 7008), (3504, 5988), (3992, 5256), (4491, 4672)]