19874660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76441}}^1$

素因数の和:76463

約数の個数: 24

約数和(自身を含む): 44947896

約数和(自身を除く): 25073236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76441, 152882, 305764, 382205, 764410, 993733, 1528820, 1987466, 3974932, 4968665, 9937330, 19874660]

約数ペア:

[(1, 19874660), (2, 9937330), (4, 4968665), (5, 3974932), (10, 1987466), (13, 1528820), (20, 993733), (26, 764410), (52, 382205), (65, 305764), (130, 152882), (260, 76441)]