20080403

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{653}}^1$

素因数の和:874

約数の個数: 16

約数和(自身を含む): 24109056

約数和(自身を除く): 4028653

約数列:

[1, 7, 23, 161, 191, 653, 1337, 4393, 4571, 15019, 30751, 105133, 124723, 873061, 2868629, 20080403]

約数ペア:

[(1, 20080403), (7, 2868629), (23, 873061), (161, 124723), (191, 105133), (653, 30751), (1337, 15019), (4393, 4571)]