391158719

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{420149}}^1$

素因数の和:420182

約数の個数: 12

約数和(自身を含む): 478971000

約数和(自身を除く): 87812281

約数列:

[1, 7, 19, 49, 133, 931, 420149, 2941043, 7982831, 20587301, 55879817, 391158719]

約数ペア:

[(1, 391158719), (7, 55879817), (19, 20587301), (49, 7982831), (133, 2941043), (931, 420149)]