21681933

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1847}}^1$

素因数の和:1913

約数の個数: 32

約数和(自身を含む): 36427776

約数和(自身を除く): 14745843

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1847, 3913, 5541, 11739, 12929, 24011, 38787, 72033, 79421, 168077, 238263, 504231, 555947, 1032473, 1667841, 3097419, 7227311, 21681933]

約数ペア:

[(1, 21681933), (3, 7227311), (7, 3097419), (13, 1667841), (21, 1032473), (39, 555947), (43, 504231), (91, 238263), (129, 168077), (273, 79421), (301, 72033), (559, 38787), (903, 24011), (1677, 12929), (1847, 11739), (3913, 5541)]