18956416

素因数分解:

$2^7\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 40538880

約数和(自身を除く): 21582464

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 47, 64, 92, 94, 128, 137, 184, 188, 274, 368, 376, 548, 736, 752, 1081, 1096, 1472, 1504, 2162, 2192, 2944, 3008, 3151, 4324, 4384, 6016, 6302, 6439, 8648, 8768, 12604, 12878, 17296, 17536, 25208, 25756, 34592, 50416, 51512, 69184, 100832, 103024, 138368, 148097, 201664, 206048, 296194, 403328, 412096, 592388, 824192, 1184776, 2369552, 4739104, 9478208, 18956416]

約数ペア:

[(1, 18956416), (2, 9478208), (4, 4739104), (8, 2369552), (16, 1184776), (23, 824192), (32, 592388), (46, 412096), (47, 403328), (64, 296194), (92, 206048), (94, 201664), (128, 148097), (137, 138368), (184, 103024), (188, 100832), (274, 69184), (368, 51512), (376, 50416), (548, 34592), (736, 25756), (752, 25208), (1081, 17536), (1096, 17296), (1472, 12878), (1504, 12604), (2162, 8768), (2192, 8648), (2944, 6439), (3008, 6302), (3151, 6016), (4324, 4384)]