289672720

素因数分解:

$2^4\times 5^1\times {\mathrm{3620909}}^1$

素因数の和:3620922

約数の個数: 20

約数和(自身を含む): 673489260

約数和(自身を除く): 383816540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3620909, 7241818, 14483636, 18104545, 28967272, 36209090, 57934544, 72418180, 144836360, 289672720]

約数ペア:

[(1, 289672720), (2, 144836360), (4, 72418180), (5, 57934544), (8, 36209090), (10, 28967272), (16, 18104545), (20, 14483636), (40, 7241818), (80, 3620909)]