21459568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103171}}^1$

素因数の和:103192

約数の個数: 20

約数和(自身を含む): 44776648

約数和(自身を除く): 23317080

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103171, 206342, 412684, 825368, 1341223, 1650736, 2682446, 5364892, 10729784, 21459568]

約数ペア:

[(1, 21459568), (2, 10729784), (4, 5364892), (8, 2682446), (13, 1650736), (16, 1341223), (26, 825368), (52, 412684), (104, 206342), (208, 103171)]