20131984

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30689}}^1$

素因数の和:30738

約数の個数: 20

約数和(自身を含む): 39958380

約数和(自身を除く): 19826396

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30689, 61378, 122756, 245512, 491024, 1258249, 2516498, 5032996, 10065992, 20131984]

約数ペア:

[(1, 20131984), (2, 10065992), (4, 5032996), (8, 2516498), (16, 1258249), (41, 491024), (82, 245512), (164, 122756), (328, 61378), (656, 30689)]