21512223

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{5011}}^1$

素因数の和:5076

約数の個数: 20

約数和(自身を含む): 32748408

約数和(自身を除く): 11236185

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 4293, 5011, 15033, 45099, 135297, 265583, 405891, 796749, 2390247, 7170741, 21512223]

約数ペア:

[(1, 21512223), (3, 7170741), (9, 2390247), (27, 796749), (53, 405891), (81, 265583), (159, 135297), (477, 45099), (1431, 15033), (4293, 5011)]