21859460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156139}}^1$

素因数の和:156155

約数の個数: 24

約数和(自身を含む): 52463040

約数和(自身を除く): 30603580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156139, 312278, 624556, 780695, 1092973, 1561390, 2185946, 3122780, 4371892, 5464865, 10929730, 21859460]

約数ペア:

[(1, 21859460), (2, 10929730), (4, 5464865), (5, 4371892), (7, 3122780), (10, 2185946), (14, 1561390), (20, 1092973), (28, 780695), (35, 624556), (70, 312278), (140, 156139)]