20940880

素因数分解:

$2^4\times 5^1\times {\mathrm{261761}}^1$

素因数の和:261774

約数の個数: 20

約数和(自身を含む): 48687732

約数和(自身を除く): 27746852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261761, 523522, 1047044, 1308805, 2094088, 2617610, 4188176, 5235220, 10470440, 20940880]

約数ペア:

[(1, 20940880), (2, 10470440), (4, 5235220), (5, 4188176), (8, 2617610), (10, 2094088), (16, 1308805), (20, 1047044), (40, 523522), (80, 261761)]