20206921

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1279}}^1$

素因数の和:1384

約数の個数: 16

約数和(自身を含む): 24125440

約数和(自身を除く): 3918519

約数列:

[1, 7, 37, 61, 259, 427, 1279, 2257, 8953, 15799, 47323, 78019, 331261, 546133, 2886703, 20206921]

約数ペア:

[(1, 20206921), (7, 2886703), (37, 546133), (61, 331261), (259, 78019), (427, 47323), (1279, 15799), (2257, 8953)]