20898171

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4951}}^1$

素因数の和:5031

約数の個数: 24

約数和(自身を含む): 35020544

約数和(自身を除く): 14122373

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4951, 14853, 34657, 44559, 103971, 311913, 331717, 995151, 2322019, 2985453, 6966057, 20898171]

約数ペア:

[(1, 20898171), (3, 6966057), (7, 2985453), (9, 2322019), (21, 995151), (63, 331717), (67, 311913), (201, 103971), (469, 44559), (603, 34657), (1407, 14853), (4221, 4951)]