21682803

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 31166640

約数和(自身を除く): 9483837

約数列:

[1, 3, 17, 51, 89, 267, 281, 289, 843, 867, 1513, 4539, 4777, 14331, 25009, 25721, 75027, 77163, 81209, 243627, 425153, 1275459, 7227601, 21682803]

約数ペア:

[(1, 21682803), (3, 7227601), (17, 1275459), (51, 425153), (89, 243627), (267, 81209), (281, 77163), (289, 75027), (843, 25721), (867, 25009), (1513, 14331), (4539, 4777)]