16620681

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 28872704

約数和(自身を除く): 12252023

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 121, 211, 217, 231, 341, 363, 633, 651, 847, 1023, 1477, 2321, 2387, 2541, 3751, 4431, 6541, 6963, 7161, 11253, 16247, 19623, 25531, 26257, 45787, 48741, 71951, 76593, 78771, 137361, 178717, 215853, 503657, 536151, 791461, 1510971, 2374383, 5540227, 16620681]

約数ペア:

[(1, 16620681), (3, 5540227), (7, 2374383), (11, 1510971), (21, 791461), (31, 536151), (33, 503657), (77, 215853), (93, 178717), (121, 137361), (211, 78771), (217, 76593), (231, 71951), (341, 48741), (363, 45787), (633, 26257), (651, 25531), (847, 19623), (1023, 16247), (1477, 11253), (2321, 7161), (2387, 6963), (2541, 6541), (3751, 4431)]