640211013

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{1823963}}^1$

素因数の和:1823985

約数の個数: 16

約数和(自身を含む): 1021419840

約数和(自身を除く): 381208827

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 1823963, 5471889, 16415667, 23711519, 49247001, 71134557, 213403671, 640211013]

約数ペア:

[(1, 640211013), (3, 213403671), (9, 71134557), (13, 49247001), (27, 23711519), (39, 16415667), (117, 5471889), (351, 1823963)]