21158326

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{16981}}^1$

素因数の和:17079

約数の個数: 16

約数和(自身を含む): 36681120

約数和(自身を除く): 15522794

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 16981, 33962, 118867, 237734, 1511309, 3022618, 10579163, 21158326]

約数ペア:

[(1, 21158326), (2, 10579163), (7, 3022618), (14, 1511309), (89, 237734), (178, 118867), (623, 33962), (1246, 16981)]