19748205

素因数分解:

$3^4\times 5^1\times {\mathrm{48761}}^1$

素因数の和:48778

約数の個数: 20

約数和(自身を含む): 35401212

約数和(自身を除く): 15653007

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 48761, 146283, 243805, 438849, 731415, 1316547, 2194245, 3949641, 6582735, 19748205]

約数ペア:

[(1, 19748205), (3, 6582735), (5, 3949641), (9, 2194245), (15, 1316547), (27, 731415), (45, 438849), (81, 243805), (135, 146283), (405, 48761)]