20801217

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 10164543

約数列:

[1, 3, 17, 31, 51, 59, 93, 177, 223, 527, 669, 1003, 1581, 1829, 3009, 3791, 5487, 6913, 11373, 13157, 20739, 31093, 39471, 93279, 117521, 223669, 352563, 407867, 671007, 1223601, 6933739, 20801217]

約数ペア:

[(1, 20801217), (3, 6933739), (17, 1223601), (31, 671007), (51, 407867), (59, 352563), (93, 223669), (177, 117521), (223, 93279), (527, 39471), (669, 31093), (1003, 20739), (1581, 13157), (1829, 11373), (3009, 6913), (3791, 5487)]