19840556

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{389}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 35773920

約数和(自身を除く): 15933364

約数列:

[1, 2, 4, 41, 82, 164, 311, 389, 622, 778, 1244, 1556, 12751, 15949, 25502, 31898, 51004, 63796, 120979, 241958, 483916, 4960139, 9920278, 19840556]

約数ペア:

[(1, 19840556), (2, 9920278), (4, 4960139), (41, 483916), (82, 241958), (164, 120979), (311, 63796), (389, 51004), (622, 31898), (778, 25502), (1244, 15949), (1556, 12751)]