18739472

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61643}}^1$

素因数の和:61670

約数の個数: 20

約数和(自身を含む): 38219280

約数和(自身を除く): 19479808

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 61643, 123286, 246572, 493144, 986288, 1171217, 2342434, 4684868, 9369736, 18739472]

約数ペア:

[(1, 18739472), (2, 9369736), (4, 4684868), (8, 2342434), (16, 1171217), (19, 986288), (38, 493144), (76, 246572), (152, 123286), (304, 61643)]