20422528

素因数分解:

$2^7\times 7^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1035

約数の個数: 64

約数和(自身を含む): 48568320

約数和(自身を除く): 28145792

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 322, 368, 448, 644, 736, 896, 991, 1288, 1472, 1982, 2576, 2944, 3964, 5152, 6937, 7928, 10304, 13874, 15856, 20608, 22793, 27748, 31712, 45586, 55496, 63424, 91172, 110992, 126848, 159551, 182344, 221984, 319102, 364688, 443968, 638204, 729376, 887936, 1276408, 1458752, 2552816, 2917504, 5105632, 10211264, 20422528]

約数ペア:

[(1, 20422528), (2, 10211264), (4, 5105632), (7, 2917504), (8, 2552816), (14, 1458752), (16, 1276408), (23, 887936), (28, 729376), (32, 638204), (46, 443968), (56, 364688), (64, 319102), (92, 221984), (112, 182344), (128, 159551), (161, 126848), (184, 110992), (224, 91172), (322, 63424), (368, 55496), (448, 45586), (644, 31712), (736, 27748), (896, 22793), (991, 20608), (1288, 15856), (1472, 13874), (1982, 10304), (2576, 7928), (2944, 6937), (3964, 5152)]