21087837

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{45943}}^1$

素因数の和:45969

約数の個数: 16

約数和(自身を含む): 33079680

約数和(自身を除く): 11991843

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 45943, 137829, 413487, 781031, 1240461, 2343093, 7029279, 21087837]

約数ペア:

[(1, 21087837), (3, 7029279), (9, 2343093), (17, 1240461), (27, 781031), (51, 413487), (153, 137829), (459, 45943)]