687728

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{811}}^1$

素因数の和:872

約数の個数: 20

約数和(自身を含む): 1359288

約数和(自身を除く): 671560

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 811, 848, 1622, 3244, 6488, 12976, 42983, 85966, 171932, 343864, 687728]

約数ペア:

[(1, 687728), (2, 343864), (4, 171932), (8, 85966), (16, 42983), (53, 12976), (106, 6488), (212, 3244), (424, 1622), (811, 848)]