21091986

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{22109}}^1$

素因数の和:22170

約数の個数: 24

約数和(自身を含む): 46563660

約数和(自身を除く): 25471674

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 159, 318, 477, 954, 22109, 44218, 66327, 132654, 198981, 397962, 1171777, 2343554, 3515331, 7030662, 10545993, 21091986]

約数ペア:

[(1, 21091986), (2, 10545993), (3, 7030662), (6, 3515331), (9, 2343554), (18, 1171777), (53, 397962), (106, 198981), (159, 132654), (318, 66327), (477, 44218), (954, 22109)]