18908396

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:450

約数の個数: 36

約数和(自身を含む): 36370152

約数和(自身を除く): 17461756

約数列:

[1, 2, 4, 13, 26, 52, 83, 166, 169, 332, 337, 338, 674, 676, 1079, 1348, 2158, 4316, 4381, 8762, 14027, 17524, 27971, 28054, 55942, 56108, 56953, 111884, 113906, 227812, 363623, 727246, 1454492, 4727099, 9454198, 18908396]

約数ペア:

[(1, 18908396), (2, 9454198), (4, 4727099), (13, 1454492), (26, 727246), (52, 363623), (83, 227812), (166, 113906), (169, 111884), (332, 56953), (337, 56108), (338, 55942), (674, 28054), (676, 27971), (1079, 17524), (1348, 14027), (2158, 8762), (4316, 4381)]