20405874

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^2\times {\mathrm{3539}}^1$

素因数の和:3606

約数の個数: 24

約数和(自身を含む): 42182640

約数和(自身を除く): 21776766

約数列:

[1, 2, 3, 6, 31, 62, 93, 186, 961, 1922, 2883, 3539, 5766, 7078, 10617, 21234, 109709, 219418, 329127, 658254, 3400979, 6801958, 10202937, 20405874]

約数ペア:

[(1, 20405874), (2, 10202937), (3, 6801958), (6, 3400979), (31, 658254), (62, 329127), (93, 219418), (186, 109709), (961, 21234), (1922, 10617), (2883, 7078), (3539, 5766)]