19868901

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{3889}}^1$

素因数の和:4036

約数の個数: 16

約数和(自身を含む): 28754880

約数和(自身を除く): 8885979

約数列:

[1, 3, 13, 39, 131, 393, 1703, 3889, 5109, 11667, 50557, 151671, 509459, 1528377, 6622967, 19868901]

約数ペア:

[(1, 19868901), (3, 6622967), (13, 1528377), (39, 509459), (131, 151671), (393, 50557), (1703, 11667), (3889, 5109)]