21913906

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{11261}}^1$

素因数の和:11409

約数の個数: 16

約数和(自身を含む): 37840320

約数和(自身を除く): 15926414

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 11261, 22522, 78827, 157654, 1565279, 3130558, 10956953, 21913906]

約数ペア:

[(1, 21913906), (2, 10956953), (7, 3130558), (14, 1565279), (139, 157654), (278, 78827), (973, 22522), (1946, 11261)]