218977871

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{7121}}^1$

素因数の和:7342

約数の個数: 16

約数和(自身を含む): 262545408

約数和(自身を除く): 43567537

約数列:

[1, 7, 23, 161, 191, 1337, 4393, 7121, 30751, 49847, 163783, 1146481, 1360111, 9520777, 31282553, 218977871]

約数ペア:

[(1, 218977871), (7, 31282553), (23, 9520777), (161, 1360111), (191, 1146481), (1337, 163783), (4393, 49847), (7121, 30751)]