20604880

素因数分解:

$2^4\times 5^1\times {\mathrm{257561}}^1$

素因数の和:257574

約数の個数: 20

約数和(自身を含む): 47906532

約数和(自身を除く): 27301652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257561, 515122, 1030244, 1287805, 2060488, 2575610, 4120976, 5151220, 10302440, 20604880]

約数ペア:

[(1, 20604880), (2, 10302440), (4, 5151220), (5, 4120976), (8, 2575610), (10, 2060488), (16, 1287805), (20, 1030244), (40, 515122), (80, 257561)]