18111700

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1303}}^1$

素因数の和:1456

約数の個数: 36

約数和(自身を含む): 39615520

約数和(自身を除く): 21503820

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1303, 1390, 2606, 2780, 3475, 5212, 6515, 6950, 13030, 13900, 26060, 32575, 65150, 130300, 181117, 362234, 724468, 905585, 1811170, 3622340, 4527925, 9055850, 18111700]

約数ペア:

[(1, 18111700), (2, 9055850), (4, 4527925), (5, 3622340), (10, 1811170), (20, 905585), (25, 724468), (50, 362234), (100, 181117), (139, 130300), (278, 65150), (556, 32575), (695, 26060), (1303, 13900), (1390, 13030), (2606, 6950), (2780, 6515), (3475, 5212)]