21261268

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14327}}^1$

素因数の和:14391

約数の個数: 24

約数和(自身を含む): 43327872

約数和(自身を除く): 22066604

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14327, 28654, 57308, 100289, 200578, 401156, 759331, 1518662, 3037324, 5315317, 10630634, 21261268]

約数ペア:

[(1, 21261268), (2, 10630634), (4, 5315317), (7, 3037324), (14, 1518662), (28, 759331), (53, 401156), (106, 200578), (212, 100289), (371, 57308), (742, 28654), (1484, 14327)]