20297823

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 33600000

約数和(自身を除く): 13302177

約数列:

[1, 3, 7, 13, 21, 39, 91, 149, 273, 447, 499, 1043, 1497, 1937, 3129, 3493, 5811, 6487, 10479, 13559, 19461, 40677, 45409, 74351, 136227, 223053, 520457, 966563, 1561371, 2899689, 6765941, 20297823]

約数ペア:

[(1, 20297823), (3, 6765941), (7, 2899689), (13, 1561371), (21, 966563), (39, 520457), (91, 223053), (149, 136227), (273, 74351), (447, 45409), (499, 40677), (1043, 19461), (1497, 13559), (1937, 10479), (3129, 6487), (3493, 5811)]