19601440

素因数分解:

$2^5\times 5^1\times {\mathrm{122509}}^1$

素因数の和:122524

約数の個数: 24

約数和(自身を含む): 46308780

約数和(自身を除く): 26707340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 122509, 245018, 490036, 612545, 980072, 1225090, 1960144, 2450180, 3920288, 4900360, 9800720, 19601440]

約数ペア:

[(1, 19601440), (2, 9800720), (4, 4900360), (5, 3920288), (8, 2450180), (10, 1960144), (16, 1225090), (20, 980072), (32, 612545), (40, 490036), (80, 245018), (160, 122509)]