21613241

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 25297920

約数和(自身を除く): 3684679

約数列:

[1, 13, 19, 53, 127, 169, 247, 689, 1007, 1651, 2413, 3211, 6731, 8957, 13091, 21463, 31369, 87503, 127889, 170183, 407797, 1137539, 1662557, 21613241]

約数ペア:

[(1, 21613241), (13, 1662557), (19, 1137539), (53, 407797), (127, 170183), (169, 127889), (247, 87503), (689, 31369), (1007, 21463), (1651, 13091), (2413, 8957), (3211, 6731)]