21370180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82193}}^1$

素因数の和:82215

約数の個数: 24

約数和(自身を含む): 48330072

約数和(自身を除く): 26959892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82193, 164386, 328772, 410965, 821930, 1068509, 1643860, 2137018, 4274036, 5342545, 10685090, 21370180]

約数ペア:

[(1, 21370180), (2, 10685090), (4, 5342545), (5, 4274036), (10, 2137018), (13, 1643860), (20, 1068509), (26, 821930), (52, 410965), (65, 328772), (130, 164386), (260, 82193)]