21721238

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{3001}}^1$

素因数の和:3068

約数の個数: 32

約数和(自身を含む): 41499648

約数和(自身を除く): 19778410

約数列:

[1, 2, 7, 11, 14, 22, 47, 77, 94, 154, 329, 517, 658, 1034, 3001, 3619, 6002, 7238, 21007, 33011, 42014, 66022, 141047, 231077, 282094, 462154, 987329, 1551517, 1974658, 3103034, 10860619, 21721238]

約数ペア:

[(1, 21721238), (2, 10860619), (7, 3103034), (11, 1974658), (14, 1551517), (22, 987329), (47, 462154), (77, 282094), (94, 231077), (154, 141047), (329, 66022), (517, 42014), (658, 33011), (1034, 21007), (3001, 7238), (3619, 6002)]