21491609909

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{9003607}}^1$

素因数の和:9003656

約数の個数: 16

約数和(自身を含む): 27659083776

約数和(自身を除く): 6167473867

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 9003607, 63025249, 99039677, 279111817, 693277739, 1953782719, 3070229987, 21491609909]

約数ペア:

[(1, 21491609909), (7, 3070229987), (11, 1953782719), (31, 693277739), (77, 279111817), (217, 99039677), (341, 63025249), (2387, 9003607)]