20781661

素因数分解:

${\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:348

約数の個数: 16

約数和(自身を含む): 22348800

約数和(自身を除く): 1567139

約数列:

[1, 29, 47, 79, 193, 1363, 2291, 3713, 5597, 9071, 15247, 107677, 263059, 442163, 716609, 20781661]

約数ペア:

[(1, 20781661), (29, 716609), (47, 442163), (79, 263059), (193, 107677), (1363, 15247), (2291, 9071), (3713, 5597)]