21839955

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20507}}^1$

素因数の和:20586

約数の個数: 16

約数和(自身を含む): 35437824

約数和(自身を除く): 13597869

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20507, 61521, 102535, 307605, 1455997, 4367991, 7279985, 21839955]

約数ペア:

[(1, 21839955), (3, 7279985), (5, 4367991), (15, 1455997), (71, 307605), (213, 102535), (355, 61521), (1065, 20507)]