21497481

素因数分解:

$3^6\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:852

約数の個数: 28

約数和(自身を含む): 33144132

約数和(自身を除く): 11646651

約数列:

[1, 3, 9, 27, 37, 81, 111, 243, 333, 729, 797, 999, 2391, 2997, 7173, 8991, 21519, 26973, 29489, 64557, 88467, 193671, 265401, 581013, 796203, 2388609, 7165827, 21497481]

約数ペア:

[(1, 21497481), (3, 7165827), (9, 2388609), (27, 796203), (37, 581013), (81, 265401), (111, 193671), (243, 88467), (333, 64557), (729, 29489), (797, 26973), (999, 21519), (2391, 8991), (2997, 7173)]