20977488

素因数分解:

$2^4\times 3^3\times 7^2\times {\mathrm{991}}^1$

素因数の和:1022

約数の個数: 120

約数和(自身を含む): 70114560

約数和(自身を除く): 49137072

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, 84, 98, 108, 112, 126, 144, 147, 168, 189, 196, 216, 252, 294, 336, 378, 392, 432, 441, 504, 588, 756, 784, 882, 991, 1008, 1176, 1323, 1512, 1764, 1982, 2352, 2646, 2973, 3024, 3528, 3964, 5292, 5946, 6937, 7056, 7928, 8919, 10584, 11892, 13874, 15856, 17838, 20811, 21168, 23784, 26757, 27748, 35676, 41622, 47568, 48559, 53514, 55496, 62433, 71352, 83244, 97118, 107028, 110992, 124866, 142704, 145677, 166488, 187299, 194236, 214056, 249732, 291354, 332976, 374598, 388472, 428112, 437031, 499464, 582708, 749196, 776944, 874062, 998928, 1165416, 1311093, 1498392, 1748124, 2330832, 2622186, 2996784, 3496248, 5244372, 6992496, 10488744, 20977488]

約数ペア:

[(1, 20977488), (2, 10488744), (3, 6992496), (4, 5244372), (6, 3496248), (7, 2996784), (8, 2622186), (9, 2330832), (12, 1748124), (14, 1498392), (16, 1311093), (18, 1165416), (21, 998928), (24, 874062), (27, 776944), (28, 749196), (36, 582708), (42, 499464), (48, 437031), (49, 428112), (54, 388472), (56, 374598), (63, 332976), (72, 291354), (84, 249732), (98, 214056), (108, 194236), (112, 187299), (126, 166488), (144, 145677), (147, 142704), (168, 124866), (189, 110992), (196, 107028), (216, 97118), (252, 83244), (294, 71352), (336, 62433), (378, 55496), (392, 53514), (432, 48559), (441, 47568), (504, 41622), (588, 35676), (756, 27748), (784, 26757), (882, 23784), (991, 21168), (1008, 20811), (1176, 17838), (1323, 15856), (1512, 13874), (1764, 11892), (1982, 10584), (2352, 8919), (2646, 7928), (2973, 7056), (3024, 6937), (3528, 5946), (3964, 5292)]