20554457

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 27033600

約数和(自身を除く): 6479143

約数列:

[1, 7, 11, 31, 77, 79, 109, 217, 341, 553, 763, 869, 1199, 2387, 2449, 3379, 6083, 8393, 8611, 17143, 23653, 26939, 37169, 60277, 94721, 188573, 260183, 266941, 663047, 1868587, 2936351, 20554457]

約数ペア:

[(1, 20554457), (7, 2936351), (11, 1868587), (31, 663047), (77, 266941), (79, 260183), (109, 188573), (217, 94721), (341, 60277), (553, 37169), (763, 26939), (869, 23653), (1199, 17143), (2387, 8611), (2449, 8393), (3379, 6083)]