638564013

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{1391207}}^1$

素因数の和:1391233

約数の個数: 16

約数和(自身を含む): 1001669760

約数和(自身を除く): 363105747

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 1391207, 4173621, 12520863, 23650519, 37562589, 70951557, 212854671, 638564013]

約数ペア:

[(1, 638564013), (3, 212854671), (9, 70951557), (17, 37562589), (27, 23650519), (51, 12520863), (153, 4173621), (459, 1391207)]