20848749

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 29914080

約数和(自身を除く): 9065331

約数列:

[1, 3, 17, 51, 139, 173, 289, 417, 519, 867, 2363, 2941, 7089, 8823, 24047, 40171, 49997, 72141, 120513, 149991, 408799, 1226397, 6949583, 20848749]

約数ペア:

[(1, 20848749), (3, 6949583), (17, 1226397), (51, 408799), (139, 149991), (173, 120513), (289, 72141), (417, 49997), (519, 40171), (867, 24047), (2363, 8823), (2941, 7089)]