20125791

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5237}}^1$

素因数の和:5311

約数の個数: 24

約数和(自身を含む): 33774624

約数和(自身を除く): 13648833

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5237, 15711, 36659, 47133, 109977, 319457, 329931, 958371, 2236199, 2875113, 6708597, 20125791]

約数ペア:

[(1, 20125791), (3, 6708597), (7, 2875113), (9, 2236199), (21, 958371), (61, 329931), (63, 319457), (183, 109977), (427, 47133), (549, 36659), (1281, 15711), (3843, 5237)]