20925880

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{967}}^1$

素因数の和:1519

約数の個数: 32

約数和(自身を含む): 47219040

約数和(自身を除く): 26293160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 967, 1082, 1934, 2164, 2705, 3868, 4328, 4835, 5410, 7736, 9670, 10820, 19340, 21640, 38680, 523147, 1046294, 2092588, 2615735, 4185176, 5231470, 10462940, 20925880]

約数ペア:

[(1, 20925880), (2, 10462940), (4, 5231470), (5, 4185176), (8, 2615735), (10, 2092588), (20, 1046294), (40, 523147), (541, 38680), (967, 21640), (1082, 19340), (1934, 10820), (2164, 9670), (2705, 7736), (3868, 5410), (4328, 4835)]