19990980359

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{21472589}}^1$

素因数の和:21472622

約数の個数: 12

約数和(自身を含む): 24478752600

約数和(自身を除く): 4487772241

約数列:

[1, 7, 19, 49, 133, 931, 21472589, 150308123, 407979191, 1052156861, 2855854337, 19990980359]

約数ペア:

[(1, 19990980359), (7, 2855854337), (19, 1052156861), (49, 407979191), (133, 150308123), (931, 21472589)]