18680440

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2609}}^1$

素因数の和:2799

約数の個数: 32

約数和(自身を含む): 42282000

約数和(自身を除く): 23601560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2609, 3580, 5218, 7160, 10436, 13045, 20872, 26090, 52180, 104360, 467011, 934022, 1868044, 2335055, 3736088, 4670110, 9340220, 18680440]

約数ペア:

[(1, 18680440), (2, 9340220), (4, 4670110), (5, 3736088), (8, 2335055), (10, 1868044), (20, 934022), (40, 467011), (179, 104360), (358, 52180), (716, 26090), (895, 20872), (1432, 13045), (1790, 10436), (2609, 7160), (3580, 5218)]