19885276

素因数分解:

$2^2\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 35448336

約数和(自身を除く): 15563060

約数列:

[1, 2, 4, 131, 137, 262, 274, 277, 524, 548, 554, 1108, 17947, 35894, 36287, 37949, 71788, 72574, 75898, 145148, 151796, 4971319, 9942638, 19885276]

約数ペア:

[(1, 19885276), (2, 9942638), (4, 4971319), (131, 151796), (137, 145148), (262, 75898), (274, 72574), (277, 71788), (524, 37949), (548, 36287), (554, 35894), (1108, 17947)]