20420870

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49807}}^1$

素因数の和:49855

約数の個数: 16

約数和(自身を含む): 37654848

約数和(自身を除く): 17233978

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 49807, 99614, 249035, 498070, 2042087, 4084174, 10210435, 20420870]

約数ペア:

[(1, 20420870), (2, 10210435), (5, 4084174), (10, 2042087), (41, 498070), (82, 249035), (205, 99614), (410, 49807)]