53780979

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{21521}}^1$

素因数の和:21555

約数の個数: 24

約数和(自身を含む): 88326288

約数和(自身を除く): 34545309

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 21521, 64563, 150647, 365857, 451941, 1054529, 1097571, 2560999, 3163587, 7682997, 17926993, 53780979]

約数ペア:

[(1, 53780979), (3, 17926993), (7, 7682997), (17, 3163587), (21, 2560999), (49, 1097571), (51, 1054529), (119, 451941), (147, 365857), (357, 150647), (833, 64563), (2499, 21521)]