66740336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320867}}^1$

素因数の和:320888

約数の個数: 20

約数和(自身を含む): 139256712

約数和(自身を除く): 72516376

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320867, 641734, 1283468, 2566936, 4171271, 5133872, 8342542, 16685084, 33370168, 66740336]

約数ペア:

[(1, 66740336), (2, 33370168), (4, 16685084), (8, 8342542), (13, 5133872), (16, 4171271), (26, 2566936), (52, 1283468), (104, 641734), (208, 320867)]