21881818

素因数分解:

$2^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{2477}}^1$

素因数の和:3117

約数の個数: 16

約数和(自身を含む): 37586304

約数和(自身を除く): 15704486

約数列:

[1, 2, 7, 14, 631, 1262, 2477, 4417, 4954, 8834, 17339, 34678, 1562987, 3125974, 10940909, 21881818]

約数ペア:

[(1, 21881818), (2, 10940909), (7, 3125974), (14, 1562987), (631, 34678), (1262, 17339), (2477, 8834), (4417, 4954)]