209915321

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{4253}}^1$

素因数の和:4912

約数の個数: 16

約数和(自身を含む): 262182528

約数和(自身を除く): 52267207

約数列:

[1, 7, 11, 77, 641, 4253, 4487, 7051, 29771, 46783, 49357, 327481, 2726173, 19083211, 29987903, 209915321]

約数ペア:

[(1, 209915321), (7, 29987903), (11, 19083211), (77, 2726173), (641, 327481), (4253, 49357), (4487, 46783), (7051, 29771)]