21096680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47947}}^1$

素因数の和:47969

約数の個数: 32

約数和(自身を含む): 51783840

約数和(自身を除く): 30687160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47947, 95894, 191788, 239735, 383576, 479470, 527417, 958940, 1054834, 1917880, 2109668, 2637085, 4219336, 5274170, 10548340, 21096680]

約数ペア:

[(1, 21096680), (2, 10548340), (4, 5274170), (5, 4219336), (8, 2637085), (10, 2109668), (11, 1917880), (20, 1054834), (22, 958940), (40, 527417), (44, 479470), (55, 383576), (88, 239735), (110, 191788), (220, 95894), (440, 47947)]