21500019

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1511}}^1$

素因数の和:1568

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13336461

約数列:

[1, 3, 9, 17, 27, 31, 51, 93, 153, 279, 459, 527, 837, 1511, 1581, 4533, 4743, 13599, 14229, 25687, 40797, 46841, 77061, 140523, 231183, 421569, 693549, 796297, 1264707, 2388891, 7166673, 21500019]

約数ペア:

[(1, 21500019), (3, 7166673), (9, 2388891), (17, 1264707), (27, 796297), (31, 693549), (51, 421569), (93, 231183), (153, 140523), (279, 77061), (459, 46841), (527, 40797), (837, 25687), (1511, 14229), (1581, 13599), (4533, 4743)]