20943909

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17497}}^1$

素因数の和:17529

約数の個数: 24

約数和(自身を含む): 36395840

約数和(自身を除く): 15451931

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17497, 52491, 122479, 157473, 332443, 367437, 997329, 1102311, 2327101, 2991987, 6981303, 20943909]

約数ペア:

[(1, 20943909), (3, 6981303), (7, 2991987), (9, 2327101), (19, 1102311), (21, 997329), (57, 367437), (63, 332443), (133, 157473), (171, 122479), (399, 52491), (1197, 17497)]