19897616

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{383}}^1$

素因数の和:599

約数の個数: 40

約数和(自身を含む): 41140224

約数和(自身を除く): 21242608

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 191, 272, 382, 383, 764, 766, 1528, 1532, 3056, 3064, 3247, 6128, 6494, 6511, 12988, 13022, 25976, 26044, 51952, 52088, 73153, 104176, 146306, 292612, 585224, 1170448, 1243601, 2487202, 4974404, 9948808, 19897616]

約数ペア:

[(1, 19897616), (2, 9948808), (4, 4974404), (8, 2487202), (16, 1243601), (17, 1170448), (34, 585224), (68, 292612), (136, 146306), (191, 104176), (272, 73153), (382, 52088), (383, 51952), (764, 26044), (766, 25976), (1528, 13022), (1532, 12988), (3056, 6511), (3064, 6494), (3247, 6128)]