19725321

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5023}}^1$

素因数の和:5061

約数の個数: 32

約数和(自身を含む): 34725888

約数和(自身を除く): 15000567

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5023, 15069, 35161, 55253, 85391, 105483, 165759, 256173, 386771, 597737, 939301, 1160313, 1793211, 2817903, 6575107, 19725321]

約数ペア:

[(1, 19725321), (3, 6575107), (7, 2817903), (11, 1793211), (17, 1160313), (21, 939301), (33, 597737), (51, 386771), (77, 256173), (119, 165759), (187, 105483), (231, 85391), (357, 55253), (561, 35161), (1309, 15069), (3927, 5023)]