20866384987

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{48857}}^1$

素因数の和:49015

約数の個数: 32

約数和(自身を含む): 26200395648

約数和(自身を除く): 5334010661

約数列:

[1, 7, 17, 37, 97, 119, 259, 629, 679, 1649, 3589, 4403, 11543, 25123, 48857, 61013, 341999, 427091, 830569, 1807709, 4739129, 5813983, 12653963, 30731053, 33173903, 80565193, 175347773, 215117371, 563956351, 1227434411, 2980912141, 20866384987]

約数ペア:

[(1, 20866384987), (7, 2980912141), (17, 1227434411), (37, 563956351), (97, 215117371), (119, 175347773), (259, 80565193), (629, 33173903), (679, 30731053), (1649, 12653963), (3589, 5813983), (4403, 4739129), (11543, 1807709), (25123, 830569), (48857, 427091), (61013, 341999)]