18788156

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 34983648

約数和(自身を除く): 16195492

約数列:

[1, 2, 4, 37, 47, 73, 74, 94, 146, 148, 188, 292, 1369, 1739, 2701, 2738, 3431, 3478, 5402, 5476, 6862, 6956, 10804, 13724, 64343, 99937, 126947, 128686, 199874, 253894, 257372, 399748, 507788, 4697039, 9394078, 18788156]

約数ペア:

[(1, 18788156), (2, 9394078), (4, 4697039), (37, 507788), (47, 399748), (73, 257372), (74, 253894), (94, 199874), (146, 128686), (148, 126947), (188, 99937), (292, 64343), (1369, 13724), (1739, 10804), (2701, 6956), (2738, 6862), (3431, 5476), (3478, 5402)]