20941179

素因数分解:

$3^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{433}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 33331200

約数和(自身を除く): 12390021

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 343, 433, 987, 1029, 1299, 2303, 3031, 6909, 9093, 16121, 20351, 21217, 48363, 61053, 63651, 142457, 148519, 427371, 445557, 997199, 2991597, 6980393, 20941179]

約数ペア:

[(1, 20941179), (3, 6980393), (7, 2991597), (21, 997199), (47, 445557), (49, 427371), (141, 148519), (147, 142457), (329, 63651), (343, 61053), (433, 48363), (987, 21217), (1029, 20351), (1299, 16121), (2303, 9093), (3031, 6909)]