20891458

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1301}}^1$

素因数の和:1378

約数の個数: 32

約数和(自身を含む): 37997568

約数和(自身を除く): 17106110

約数列:

[1, 2, 7, 14, 31, 37, 62, 74, 217, 259, 434, 518, 1147, 1301, 2294, 2602, 8029, 9107, 16058, 18214, 40331, 48137, 80662, 96274, 282317, 336959, 564634, 673918, 1492247, 2984494, 10445729, 20891458]

約数ペア:

[(1, 20891458), (2, 10445729), (7, 2984494), (14, 1492247), (31, 673918), (37, 564634), (62, 336959), (74, 282317), (217, 96274), (259, 80662), (434, 48137), (518, 40331), (1147, 18214), (1301, 16058), (2294, 9107), (2602, 8029)]