21679791

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 34621440

約数和(自身を除く): 12941649

約数列:

[1, 3, 7, 21, 29, 87, 97, 203, 291, 367, 609, 679, 1101, 2037, 2569, 2813, 7707, 8439, 10643, 19691, 31929, 35599, 59073, 74501, 106797, 223503, 249193, 747579, 1032371, 3097113, 7226597, 21679791]

約数ペア:

[(1, 21679791), (3, 7226597), (7, 3097113), (21, 1032371), (29, 747579), (87, 249193), (97, 223503), (203, 106797), (291, 74501), (367, 59073), (609, 35599), (679, 31929), (1101, 19691), (2037, 10643), (2569, 8439), (2813, 7707)]