21985641

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2521}}^1$

素因数の和:2566

約数の個数: 32

約数和(自身を含む): 36316800

約数和(自身を除く): 14331159

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 153, 171, 323, 459, 513, 969, 2521, 2907, 7563, 8721, 22689, 42857, 47899, 68067, 128571, 143697, 385713, 431091, 814283, 1157139, 1293273, 2442849, 7328547, 21985641]

約数ペア:

[(1, 21985641), (3, 7328547), (9, 2442849), (17, 1293273), (19, 1157139), (27, 814283), (51, 431091), (57, 385713), (153, 143697), (171, 128571), (323, 68067), (459, 47899), (513, 42857), (969, 22689), (2521, 8721), (2907, 7563)]