81640432

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{221849}}^1$

素因数の和:221880

約数の個数: 20

約数和(自身を含む): 165056400

約数和(自身を除く): 83415968

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 221849, 443698, 887396, 1774792, 3549584, 5102527, 10205054, 20410108, 40820216, 81640432]

約数ペア:

[(1, 81640432), (2, 40820216), (4, 20410108), (8, 10205054), (16, 5102527), (23, 3549584), (46, 1774792), (92, 887396), (184, 443698), (368, 221849)]