20781003

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{7757}}^1$

素因数の和:7826

約数の個数: 16

約数和(自身を含む): 29790720

約数和(自身を除く): 9009717

約数列:

[1, 3, 19, 47, 57, 141, 893, 2679, 7757, 23271, 147383, 364579, 442149, 1093737, 6927001, 20781003]

約数ペア:

[(1, 20781003), (3, 6927001), (19, 1093737), (47, 442149), (57, 364579), (141, 147383), (893, 23271), (2679, 7757)]