20639853

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1153}}^1$

素因数の和:1195

約数の個数: 40

約数和(自身を含む): 35187768

約数和(自身を除く): 14547915

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 459, 663, 1053, 1153, 1377, 1989, 3459, 5967, 10377, 14989, 17901, 19601, 31131, 44967, 58803, 93393, 134901, 176409, 254813, 404703, 529227, 764439, 1214109, 1587681, 2293317, 6879951, 20639853]

約数ペア:

[(1, 20639853), (3, 6879951), (9, 2293317), (13, 1587681), (17, 1214109), (27, 764439), (39, 529227), (51, 404703), (81, 254813), (117, 176409), (153, 134901), (221, 93393), (351, 58803), (459, 44967), (663, 31131), (1053, 19601), (1153, 17901), (1377, 14989), (1989, 10377), (3459, 5967)]