211318457

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{21517}}^1$

素因数の和:21608

約数の個数: 16

約数和(自身を含む): 256150272

約数和(自身を除く): 44831815

約数列:

[1, 7, 23, 61, 161, 427, 1403, 9821, 21517, 150619, 494891, 1312537, 3464237, 9187759, 30188351, 211318457]

約数ペア:

[(1, 211318457), (7, 30188351), (23, 9187759), (61, 3464237), (161, 1312537), (427, 494891), (1403, 150619), (9821, 21517)]